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Finding the Fourth Proportional to 88,425.60, 132,638.40 and 70,929.60

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Solution

The fourth proportional to 88,425.60, 132,638.40 and 70,929.60 is: 106,394.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,425.60 : 132,638.40 = 70,929.60 : x
  2. Step 2: Convert to fraction form
    88,425.60/132,638.40 = 70,929.60/x
  3. Step 3: Cross multiply
    88,425.60x = 132,638.40 × 70,929.60
  4. Step 4: Simplify right side
    88,425.60x = 9,407,988,656.64
  5. Step 5: Solve for x
    x = 9,407,988,656.64/88,425.60
  6. Step 6: Final answer
    x = 106,394.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.