Home / 138,769.16-207,967.26-72,070.52

Finding the Fourth Proportional to 138,769.16, 207,967.26 and 72,070.52

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Solution

The fourth proportional to 138,769.16, 207,967.26 and 72,070.52 is: 108,008.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,769.16 : 207,967.26 = 72,070.52 : x
  2. Step 2: Convert to fraction form
    138,769.16/207,967.26 = 72,070.52/x
  3. Step 3: Cross multiply
    138,769.16x = 207,967.26 × 72,070.52
  4. Step 4: Simplify right side
    138,769.16x = 14,988,308,571.18
  5. Step 5: Solve for x
    x = 14,988,308,571.18/138,769.16
  6. Step 6: Final answer
    x = 108,008.93

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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.