Home / 129,231,513-193,848,957.54-42,969,919.86

Finding the Fourth Proportional to 129,231,513, 193,848,957.54 and 42,969,919.86

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Solution

The fourth proportional to 129,231,513, 193,848,957.54 and 42,969,919.86 is: 64,455,441.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,231,513 : 193,848,957.54 = 42,969,919.86 : x
  2. Step 2: Convert to fraction form
    129,231,513/193,848,957.54 = 42,969,919.86/x
  3. Step 3: Cross multiply
    129,231,513x = 193,848,957.54 × 42,969,919.86
  4. Step 4: Simplify right side
    129,231,513x = 8,329,674,170,438,342
  5. Step 5: Solve for x
    x = 8,329,674,170,438,342/129,231,513
  6. Step 6: Final answer
    x = 64,455,441.07

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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.