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Finding the Fourth Proportional to 136,862.71, 188,766.47 and 117,774.64

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Solution

The fourth proportional to 136,862.71, 188,766.47 and 117,774.64 is: 162,439.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,862.71 : 188,766.47 = 117,774.64 : x
  2. Step 2: Convert to fraction form
    136,862.71/188,766.47 = 117,774.64/x
  3. Step 3: Cross multiply
    136,862.71x = 188,766.47 × 117,774.64
  4. Step 4: Simplify right side
    136,862.71x = 22,231,902,931.36
  5. Step 5: Solve for x
    x = 22,231,902,931.36/136,862.71
  6. Step 6: Final answer
    x = 162,439.45

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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.