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Finding the Fourth Proportional to 147,275.88, 203,240.71 and 80,207.88

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Solution

The fourth proportional to 147,275.88, 203,240.71 and 80,207.88 is: 110,686.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,275.88 : 203,240.71 = 80,207.88 : x
  2. Step 2: Convert to fraction form
    147,275.88/203,240.71 = 80,207.88/x
  3. Step 3: Cross multiply
    147,275.88x = 203,240.71 × 80,207.88
  4. Step 4: Simplify right side
    147,275.88x = 16,301,506,478.79
  5. Step 5: Solve for x
    x = 16,301,506,478.79/147,275.88
  6. Step 6: Final answer
    x = 110,686.87

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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.