Home / 157,132,815,412.12-216,843,372,256.98-84,874,879,887.64

Finding the Fourth Proportional to 157,132,815,412.12, 216,843,372,256.98 and 84,874,879,887.64

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Solution

The fourth proportional to 157,132,815,412.12, 216,843,372,256.98 and 84,874,879,887.64 is: 117,127,381,231.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,132,815,412.12 : 216,843,372,256.98 = 84,874,879,887.64 : x
  2. Step 2: Convert to fraction form
    157,132,815,412.12/216,843,372,256.98 = 84,874,879,887.64/x
  3. Step 3: Cross multiply
    157,132,815,412.12x = 216,843,372,256.98 × 84,874,879,887.64
  4. Step 4: Simplify right side
    157,132,815,412.12x = 18,404,555,174,741,985,460,224
  5. Step 5: Solve for x
    x = 18,404,555,174,741,985,460,224/157,132,815,412.12
  6. Step 6: Final answer
    x = 117,127,381,231.42

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.