Home / 154,411.20-231,507.45-70,211.70

Finding the Fourth Proportional to 154,411.20, 231,507.45 and 70,211.70

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Solution

The fourth proportional to 154,411.20, 231,507.45 and 70,211.70 is: 105,267.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,411.20 : 231,507.45 = 70,211.70 : x
  2. Step 2: Convert to fraction form
    154,411.20/231,507.45 = 70,211.70/x
  3. Step 3: Cross multiply
    154,411.20x = 231,507.45 × 70,211.70
  4. Step 4: Simplify right side
    154,411.20x = 16,254,531,627.17
  5. Step 5: Solve for x
    x = 16,254,531,627.17/154,411.20
  6. Step 6: Final answer
    x = 105,267.83

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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.