Home / 100,009.02-138,013.92-67,753.50

Finding the Fourth Proportional to 100,009.02, 138,013.92 and 67,753.50

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Solution

The fourth proportional to 100,009.02, 138,013.92 and 67,753.50 is: 93,500.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,009.02 : 138,013.92 = 67,753.50 : x
  2. Step 2: Convert to fraction form
    100,009.02/138,013.92 = 67,753.50/x
  3. Step 3: Cross multiply
    100,009.02x = 138,013.92 × 67,753.50
  4. Step 4: Simplify right side
    100,009.02x = 9,350,926,128.72
  5. Step 5: Solve for x
    x = 9,350,926,128.72/100,009.02
  6. Step 6: Final answer
    x = 93,500.83

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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.