Home / 138,502.06-207,679.23-71,875.10

Finding the Fourth Proportional to 138,502.06, 207,679.23 and 71,875.10

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Solution

The fourth proportional to 138,502.06, 207,679.23 and 71,875.10 is: 107,774.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,502.06 : 207,679.23 = 71,875.10 : x
  2. Step 2: Convert to fraction form
    138,502.06/207,679.23 = 71,875.10/x
  3. Step 3: Cross multiply
    138,502.06x = 207,679.23 × 71,875.10
  4. Step 4: Simplify right side
    138,502.06x = 14,926,965,424.17
  5. Step 5: Solve for x
    x = 14,926,965,424.17/138,502.06
  6. Step 6: Final answer
    x = 107,774.32

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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.