Home / 138,001.10-207,001.65-100,384.70

Finding the Fourth Proportional to 138,001.10, 207,001.65 and 100,384.70

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Solution

The fourth proportional to 138,001.10, 207,001.65 and 100,384.70 is: 150,577.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,001.10 : 207,001.65 = 100,384.70 : x
  2. Step 2: Convert to fraction form
    138,001.10/207,001.65 = 100,384.70/x
  3. Step 3: Cross multiply
    138,001.10x = 207,001.65 × 100,384.70
  4. Step 4: Simplify right side
    138,001.10x = 20,779,798,534.76
  5. Step 5: Solve for x
    x = 20,779,798,534.76/138,001.10
  6. Step 6: Final answer
    x = 150,577.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.