Home / 135,557.13-187,068.86-75,131.68

Finding the Fourth Proportional to 135,557.13, 187,068.86 and 75,131.68

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Solution

The fourth proportional to 135,557.13, 187,068.86 and 75,131.68 is: 103,681.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,557.13 : 187,068.86 = 75,131.68 : x
  2. Step 2: Convert to fraction form
    135,557.13/187,068.86 = 75,131.68/x
  3. Step 3: Cross multiply
    135,557.13x = 187,068.86 × 75,131.68
  4. Step 4: Simplify right side
    135,557.13x = 14,054,796,990.52
  5. Step 5: Solve for x
    x = 14,054,796,990.52/135,557.13
  6. Step 6: Final answer
    x = 103,681.73

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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.