Home / 91,811,086.20-137,716,629.30-79,853,663.70

Finding the Fourth Proportional to 91,811,086.20, 137,716,629.30 and 79,853,663.70

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Solution

The fourth proportional to 91,811,086.20, 137,716,629.30 and 79,853,663.70 is: 119,780,495.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,811,086.20 : 137,716,629.30 = 79,853,663.70 : x
  2. Step 2: Convert to fraction form
    91,811,086.20/137,716,629.30 = 79,853,663.70/x
  3. Step 3: Cross multiply
    91,811,086.20x = 137,716,629.30 × 79,853,663.70
  4. Step 4: Simplify right side
    91,811,086.20x = 10,997,177,402,019,768
  5. Step 5: Solve for x
    x = 10,997,177,402,019,768/91,811,086.20
  6. Step 6: Final answer
    x = 119,780,495.55

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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.