Home / 98,931.92-136,449.78-68,716.76

Finding the Fourth Proportional to 98,931.92, 136,449.78 and 68,716.76

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Solution

The fourth proportional to 98,931.92, 136,449.78 and 68,716.76 is: 94,776.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,931.92 : 136,449.78 = 68,716.76 : x
  2. Step 2: Convert to fraction form
    98,931.92/136,449.78 = 68,716.76/x
  3. Step 3: Cross multiply
    98,931.92x = 136,449.78 × 68,716.76
  4. Step 4: Simplify right side
    98,931.92x = 9,376,386,784.31
  5. Step 5: Solve for x
    x = 9,376,386,784.31/98,931.92
  6. Step 6: Final answer
    x = 94,776.15

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1.5x scale

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.