Home / 153,372.12-211,649.40-85,389.13

Finding the Fourth Proportional to 153,372.12, 211,649.40 and 85,389.13

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Solution

The fourth proportional to 153,372.12, 211,649.40 and 85,389.13 is: 117,834.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,372.12 : 211,649.40 = 85,389.13 : x
  2. Step 2: Convert to fraction form
    153,372.12/211,649.40 = 85,389.13/x
  3. Step 3: Cross multiply
    153,372.12x = 211,649.40 × 85,389.13
  4. Step 4: Simplify right side
    153,372.12x = 18,072,558,131.02
  5. Step 5: Solve for x
    x = 18,072,558,131.02/153,372.12
  6. Step 6: Final answer
    x = 117,834.70

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1.5x scale

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.