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Finding the Fourth Proportional to 118,088.68, 176,981.80 and 64,779.88

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Solution

The fourth proportional to 118,088.68, 176,981.80 and 64,779.88 is: 97,086.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,088.68 : 176,981.80 = 64,779.88 : x
  2. Step 2: Convert to fraction form
    118,088.68/176,981.80 = 64,779.88/x
  3. Step 3: Cross multiply
    118,088.68x = 176,981.80 × 64,779.88
  4. Step 4: Simplify right side
    118,088.68x = 11,464,859,766.18
  5. Step 5: Solve for x
    x = 11,464,859,766.18/118,088.68
  6. Step 6: Final answer
    x = 97,086.87

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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.