Home / 156,981.96-216,636.66-88,999.20

Finding the Fourth Proportional to 156,981.96, 216,636.66 and 88,999.20

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Solution

The fourth proportional to 156,981.96, 216,636.66 and 88,999.20 is: 122,819.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,981.96 : 216,636.66 = 88,999.20 : x
  2. Step 2: Convert to fraction form
    156,981.96/216,636.66 = 88,999.20/x
  3. Step 3: Cross multiply
    156,981.96x = 216,636.66 × 88,999.20
  4. Step 4: Simplify right side
    156,981.96x = 19,280,489,430.67
  5. Step 5: Solve for x
    x = 19,280,489,430.67/156,981.96
  6. Step 6: Final answer
    x = 122,819.78

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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.