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Finding the Fourth Proportional to 135,098.71, 186,445.87 and 74,668.05

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Solution

The fourth proportional to 135,098.71, 186,445.87 and 74,668.05 is: 103,047.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,098.71 : 186,445.87 = 74,668.05 : x
  2. Step 2: Convert to fraction form
    135,098.71/186,445.87 = 74,668.05/x
  3. Step 3: Cross multiply
    135,098.71x = 186,445.87 × 74,668.05
  4. Step 4: Simplify right side
    135,098.71x = 13,921,549,543.45
  5. Step 5: Solve for x
    x = 13,921,549,543.45/135,098.71
  6. Step 6: Final answer
    x = 103,047.24

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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.