Home / 191,981.10-288,115.65-98,438.70

Finding the Fourth Proportional to 191,981.10, 288,115.65 and 98,438.70

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Solution

The fourth proportional to 191,981.10, 288,115.65 and 98,438.70 is: 147,731.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,981.10 : 288,115.65 = 98,438.70 : x
  2. Step 2: Convert to fraction form
    191,981.10/288,115.65 = 98,438.70/x
  3. Step 3: Cross multiply
    191,981.10x = 288,115.65 × 98,438.70
  4. Step 4: Simplify right side
    191,981.10x = 28,361,730,035.66
  5. Step 5: Solve for x
    x = 28,361,730,035.66/191,981.10
  6. Step 6: Final answer
    x = 147,731.89

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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.