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Finding the Fourth Proportional to 107,710.68, 148,543.98 and 67,428.11

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Solution

The fourth proportional to 107,710.68, 148,543.98 and 67,428.11 is: 92,990.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,710.68 : 148,543.98 = 67,428.11 : x
  2. Step 2: Convert to fraction form
    107,710.68/148,543.98 = 67,428.11/x
  3. Step 3: Cross multiply
    107,710.68x = 148,543.98 × 67,428.11
  4. Step 4: Simplify right side
    107,710.68x = 10,016,039,941.78
  5. Step 5: Solve for x
    x = 10,016,039,941.78/107,710.68
  6. Step 6: Final answer
    x = 92,990.22

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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.