Home / 128,124,697.74-176,811,139.95-69,386,000.22

Finding the Fourth Proportional to 128,124,697.74, 176,811,139.95 and 69,386,000.22

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Solution

The fourth proportional to 128,124,697.74, 176,811,139.95 and 69,386,000.22 is: 95,752,169.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,124,697.74 : 176,811,139.95 = 69,386,000.22 : x
  2. Step 2: Convert to fraction form
    128,124,697.74/176,811,139.95 = 69,386,000.22/x
  3. Step 3: Cross multiply
    128,124,697.74x = 176,811,139.95 × 69,386,000.22
  4. Step 4: Simplify right side
    128,124,697.74x = 12,268,217,795,469,150
  5. Step 5: Solve for x
    x = 12,268,217,795,469,150/128,124,697.74
  6. Step 6: Final answer
    x = 95,752,169.66

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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.