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Finding the Fourth Proportional to 131,445.76, 181,395.02 and 71,829.76

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Solution

The fourth proportional to 131,445.76, 181,395.02 and 71,829.76 is: 99,125.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,445.76 : 181,395.02 = 71,829.76 : x
  2. Step 2: Convert to fraction form
    131,445.76/181,395.02 = 71,829.76/x
  3. Step 3: Cross multiply
    131,445.76x = 181,395.02 × 71,829.76
  4. Step 4: Simplify right side
    131,445.76x = 13,029,560,751.80
  5. Step 5: Solve for x
    x = 13,029,560,751.80/131,445.76
  6. Step 6: Final answer
    x = 99,125.00

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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.