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Finding the Fourth Proportional to 93,158.57, 128,274.09 and 70,221.71

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Solution

The fourth proportional to 93,158.57, 128,274.09 and 70,221.71 is: 96,691.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,158.57 : 128,274.09 = 70,221.71 : x
  2. Step 2: Convert to fraction form
    93,158.57/128,274.09 = 70,221.71/x
  3. Step 3: Cross multiply
    93,158.57x = 128,274.09 × 70,221.71
  4. Step 4: Simplify right side
    93,158.57x = 9,007,625,948.49
  5. Step 5: Solve for x
    x = 9,007,625,948.49/93,158.57
  6. Step 6: Final answer
    x = 96,691.33

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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.