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Finding the Fourth Proportional to 191,188.08, 286,781.04 and 66,528

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Solution

The fourth proportional to 191,188.08, 286,781.04 and 66,528 is: 99,791.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,188.08 : 286,781.04 = 66,528 : x
  2. Step 2: Convert to fraction form
    191,188.08/286,781.04 = 66,528/x
  3. Step 3: Cross multiply
    191,188.08x = 286,781.04 × 66,528
  4. Step 4: Simplify right side
    191,188.08x = 19,078,969,029.12
  5. Step 5: Solve for x
    x = 19,078,969,029.12/191,188.08
  6. Step 6: Final answer
    x = 99,791.62

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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.