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Finding the Fourth Proportional to 88,316.79, 132,972.39 and 77,854.02

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Solution

The fourth proportional to 88,316.79, 132,972.39 and 77,854.02 is: 117,219.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,316.79 : 132,972.39 = 77,854.02 : x
  2. Step 2: Convert to fraction form
    88,316.79/132,972.39 = 77,854.02/x
  3. Step 3: Cross multiply
    88,316.79x = 132,972.39 × 77,854.02
  4. Step 4: Simplify right side
    88,316.79x = 10,352,435,110.51
  5. Step 5: Solve for x
    x = 10,352,435,110.51/88,316.79
  6. Step 6: Final answer
    x = 117,219.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.