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Finding the Fourth Proportional to 135,490.55, 186,978.27 and 75,062.48

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Solution

The fourth proportional to 135,490.55, 186,978.27 and 75,062.48 is: 103,586.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,490.55 : 186,978.27 = 75,062.48 : x
  2. Step 2: Convert to fraction form
    135,490.55/186,978.27 = 75,062.48/x
  3. Step 3: Cross multiply
    135,490.55x = 186,978.27 × 75,062.48
  4. Step 4: Simplify right side
    135,490.55x = 14,035,053,119.76
  5. Step 5: Solve for x
    x = 14,035,053,119.76/135,490.55
  6. Step 6: Final answer
    x = 103,586.95

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1.5x scale

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.