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Finding the Fourth Proportional to 93,581.40, 140,153.40 and 91,702.20

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Solution

The fourth proportional to 93,581.40, 140,153.40 and 91,702.20 is: 137,338.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,581.40 : 140,153.40 = 91,702.20 : x
  2. Step 2: Convert to fraction form
    93,581.40/140,153.40 = 91,702.20/x
  3. Step 3: Cross multiply
    93,581.40x = 140,153.40 × 91,702.20
  4. Step 4: Simplify right side
    93,581.40x = 12,852,375,117.48
  5. Step 5: Solve for x
    x = 12,852,375,117.48/93,581.40
  6. Step 6: Final answer
    x = 137,338.99

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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.