Home / 135,557.16-187,068.87-75,136.89

Finding the Fourth Proportional to 135,557.16, 187,068.87 and 75,136.89

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Solution

The fourth proportional to 135,557.16, 187,068.87 and 75,136.89 is: 103,688.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,557.16 : 187,068.87 = 75,136.89 : x
  2. Step 2: Convert to fraction form
    135,557.16/187,068.87 = 75,136.89/x
  3. Step 3: Cross multiply
    135,557.16x = 187,068.87 × 75,136.89
  4. Step 4: Simplify right side
    135,557.16x = 14,055,773,107.61
  5. Step 5: Solve for x
    x = 14,055,773,107.61/135,557.16
  6. Step 6: Final answer
    x = 103,688.90

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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.