Home / 210,901.10-291,043.53-115,407.80

Finding the Fourth Proportional to 210,901.10, 291,043.53 and 115,407.80

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Solution

The fourth proportional to 210,901.10, 291,043.53 and 115,407.80 is: 159,262.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,901.10 : 291,043.53 = 115,407.80 : x
  2. Step 2: Convert to fraction form
    210,901.10/291,043.53 = 115,407.80/x
  3. Step 3: Cross multiply
    210,901.10x = 291,043.53 × 115,407.80
  4. Step 4: Simplify right side
    210,901.10x = 33,588,692,046.32
  5. Step 5: Solve for x
    x = 33,588,692,046.32/210,901.10
  6. Step 6: Final answer
    x = 159,262.77

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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.