Home / 90,110,520.24-134,945,325.72-81,376,520.40

Finding the Fourth Proportional to 90,110,520.24, 134,945,325.72 and 81,376,520.40

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Solution

The fourth proportional to 90,110,520.24, 134,945,325.72 and 81,376,520.40 is: 121,865,693.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,110,520.24 : 134,945,325.72 = 81,376,520.40 : x
  2. Step 2: Convert to fraction form
    90,110,520.24/134,945,325.72 = 81,376,520.40/x
  3. Step 3: Cross multiply
    90,110,520.24x = 134,945,325.72 × 81,376,520.40
  4. Step 4: Simplify right side
    90,110,520.24x = 10,981,381,051,338,226
  5. Step 5: Solve for x
    x = 10,981,381,051,338,226/90,110,520.24
  6. Step 6: Final answer
    x = 121,865,693.62

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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.