Home / 120,217,969.45-180,092,102.88-82,819,981.87

Finding the Fourth Proportional to 120,217,969.45, 180,092,102.88 and 82,819,981.87

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Solution

The fourth proportional to 120,217,969.45, 180,092,102.88 and 82,819,981.87 is: 124,068,180.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,217,969.45 : 180,092,102.88 = 82,819,981.87 : x
  2. Step 2: Convert to fraction form
    120,217,969.45/180,092,102.88 = 82,819,981.87/x
  3. Step 3: Cross multiply
    120,217,969.45x = 180,092,102.88 × 82,819,981.87
  4. Step 4: Simplify right side
    120,217,969.45x = 14,915,224,695,312,120
  5. Step 5: Solve for x
    x = 14,915,224,695,312,120/120,217,969.45
  6. Step 6: Final answer
    x = 124,068,180.18

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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.