Home / 128,679,812.57-192,911,232.69-55,841,722.90

Finding the Fourth Proportional to 128,679,812.57, 192,911,232.69 and 55,841,722.90

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Solution

The fourth proportional to 128,679,812.57, 192,911,232.69 and 55,841,722.90 is: 83,715,505.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,679,812.57 : 192,911,232.69 = 55,841,722.90 : x
  2. Step 2: Convert to fraction form
    128,679,812.57/192,911,232.69 = 55,841,722.90/x
  3. Step 3: Cross multiply
    128,679,812.57x = 192,911,232.69 × 55,841,722.90
  4. Step 4: Simplify right side
    128,679,812.57x = 10,772,495,599,690,124
  5. Step 5: Solve for x
    x = 10,772,495,599,690,124/128,679,812.57
  6. Step 6: Final answer
    x = 83,715,505.83

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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.