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Finding the Fourth Proportional to 135,762.66, 187,437.51 and 87,448.59

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Solution

The fourth proportional to 135,762.66, 187,437.51 and 87,448.59 is: 120,733.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,762.66 : 187,437.51 = 87,448.59 : x
  2. Step 2: Convert to fraction form
    135,762.66/187,437.51 = 87,448.59/x
  3. Step 3: Cross multiply
    135,762.66x = 187,437.51 × 87,448.59
  4. Step 4: Simplify right side
    135,762.66x = 16,391,145,962.61
  5. Step 5: Solve for x
    x = 16,391,145,962.61/135,762.66
  6. Step 6: Final answer
    x = 120,733.83

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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.