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Finding the Fourth Proportional to 191,329.65, 287,024.85 and 64,981.80

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Solution

The fourth proportional to 191,329.65, 287,024.85 and 64,981.80 is: 97,483.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,329.65 : 287,024.85 = 64,981.80 : x
  2. Step 2: Convert to fraction form
    191,329.65/287,024.85 = 64,981.80/x
  3. Step 3: Cross multiply
    191,329.65x = 287,024.85 × 64,981.80
  4. Step 4: Simplify right side
    191,329.65x = 18,651,391,397.73
  5. Step 5: Solve for x
    x = 18,651,391,397.73/191,329.65
  6. Step 6: Final answer
    x = 97,483.02

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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.