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Finding the Fourth Proportional to 107,211.61, 147,855.21 and 66,929.11

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Solution

The fourth proportional to 107,211.61, 147,855.21 and 66,929.11 is: 92,301.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,211.61 : 147,855.21 = 66,929.11 : x
  2. Step 2: Convert to fraction form
    107,211.61/147,855.21 = 66,929.11/x
  3. Step 3: Cross multiply
    107,211.61x = 147,855.21 × 66,929.11
  4. Step 4: Simplify right side
    107,211.61x = 9,895,817,614.16
  5. Step 5: Solve for x
    x = 9,895,817,614.16/107,211.61
  6. Step 6: Final answer
    x = 92,301.73

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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.