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Finding the Fourth Proportional to 135,802.76, 187,404.98 and 75,369.90

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Solution

The fourth proportional to 135,802.76, 187,404.98 and 75,369.90 is: 104,008.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,802.76 : 187,404.98 = 75,369.90 : x
  2. Step 2: Convert to fraction form
    135,802.76/187,404.98 = 75,369.90/x
  3. Step 3: Cross multiply
    135,802.76x = 187,404.98 × 75,369.90
  4. Step 4: Simplify right side
    135,802.76x = 14,124,694,602.10
  5. Step 5: Solve for x
    x = 14,124,694,602.10/135,802.76
  6. Step 6: Final answer
    x = 104,008.89

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.