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Finding the Fourth Proportional to 135,775.54, 187,384.08 and 75,346.61

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Solution

The fourth proportional to 135,775.54, 187,384.08 and 75,346.61 is: 103,985.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,775.54 : 187,384.08 = 75,346.61 : x
  2. Step 2: Convert to fraction form
    135,775.54/187,384.08 = 75,346.61/x
  3. Step 3: Cross multiply
    135,775.54x = 187,384.08 × 75,346.61
  4. Step 4: Simplify right side
    135,775.54x = 14,118,754,541.60
  5. Step 5: Solve for x
    x = 14,118,754,541.60/135,775.54
  6. Step 6: Final answer
    x = 103,985.99

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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.