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Finding the Fourth Proportional to 191,074.68, 286,614.86 and 72,752.58

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Solution

The fourth proportional to 191,074.68, 286,614.86 and 72,752.58 is: 109,129.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,074.68 : 286,614.86 = 72,752.58 : x
  2. Step 2: Convert to fraction form
    191,074.68/286,614.86 = 72,752.58/x
  3. Step 3: Cross multiply
    191,074.68x = 286,614.86 × 72,752.58
  4. Step 4: Simplify right side
    191,074.68x = 20,851,970,167.58
  5. Step 5: Solve for x
    x = 20,851,970,167.58/191,074.68
  6. Step 6: Final answer
    x = 109,129.95

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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.