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Finding the Fourth Proportional to 145,960.92, 201,426.30 and 78,892.92

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Solution

The fourth proportional to 145,960.92, 201,426.30 and 78,892.92 is: 108,872.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,960.92 : 201,426.30 = 78,892.92 : x
  2. Step 2: Convert to fraction form
    145,960.92/201,426.30 = 78,892.92/x
  3. Step 3: Cross multiply
    145,960.92x = 201,426.30 × 78,892.92
  4. Step 4: Simplify right side
    145,960.92x = 15,891,108,971.80
  5. Step 5: Solve for x
    x = 15,891,108,971.80/145,960.92
  6. Step 6: Final answer
    x = 108,872.35

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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.