Home / 90,749,141.20-136,123,711.80-30,164,867.20

Finding the Fourth Proportional to 90,749,141.20, 136,123,711.80 and 30,164,867.20

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Solution

The fourth proportional to 90,749,141.20, 136,123,711.80 and 30,164,867.20 is: 45,247,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,749,141.20 : 136,123,711.80 = 30,164,867.20 : x
  2. Step 2: Convert to fraction form
    90,749,141.20/136,123,711.80 = 30,164,867.20/x
  3. Step 3: Cross multiply
    90,749,141.20x = 136,123,711.80 × 30,164,867.20
  4. Step 4: Simplify right side
    90,749,141.20x = 4,106,153,689,218,073
  5. Step 5: Solve for x
    x = 4,106,153,689,218,073/90,749,141.20
  6. Step 6: Final answer
    x = 45,247,300.80

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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.