Home / 129,509,478.75-194,364,956.72-90,393,818.97

Finding the Fourth Proportional to 129,509,478.75, 194,364,956.72 and 90,393,818.97

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Solution

The fourth proportional to 129,509,478.75, 194,364,956.72 and 90,393,818.97 is: 135,661,041.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,509,478.75 : 194,364,956.72 = 90,393,818.97 : x
  2. Step 2: Convert to fraction form
    129,509,478.75/194,364,956.72 = 90,393,818.97/x
  3. Step 3: Cross multiply
    129,509,478.75x = 194,364,956.72 × 90,393,818.97
  4. Step 4: Simplify right side
    129,509,478.75x = 17,569,390,712,306,404
  5. Step 5: Solve for x
    x = 17,569,390,712,306,404/129,509,478.75
  6. Step 6: Final answer
    x = 135,661,041.04

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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.