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Finding the Fourth Proportional to 100,656.72, 150,985.14 and 99,001.92

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Solution

The fourth proportional to 100,656.72, 150,985.14 and 99,001.92 is: 148,502.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,656.72 : 150,985.14 = 99,001.92 : x
  2. Step 2: Convert to fraction form
    100,656.72/150,985.14 = 99,001.92/x
  3. Step 3: Cross multiply
    100,656.72x = 150,985.14 × 99,001.92
  4. Step 4: Simplify right side
    100,656.72x = 14,947,818,751.47
  5. Step 5: Solve for x
    x = 14,947,818,751.47/100,656.72
  6. Step 6: Final answer
    x = 148,502.94

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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.