Home / 99,981.14-149,934.04-40,785.12

Finding the Fourth Proportional to 99,981.14, 149,934.04 and 40,785.12

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Solution

The fourth proportional to 99,981.14, 149,934.04 and 40,785.12 is: 61,162.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,981.14 : 149,934.04 = 40,785.12 : x
  2. Step 2: Convert to fraction form
    99,981.14/149,934.04 = 40,785.12/x
  3. Step 3: Cross multiply
    99,981.14x = 149,934.04 × 40,785.12
  4. Step 4: Simplify right side
    99,981.14x = 6,115,077,711.52
  5. Step 5: Solve for x
    x = 6,115,077,711.52/99,981.14
  6. Step 6: Final answer
    x = 61,162.32

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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.