Home / 99,986.04-137,981.52-54,664.92

Finding the Fourth Proportional to 99,986.04, 137,981.52 and 54,664.92

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Solution

The fourth proportional to 99,986.04, 137,981.52 and 54,664.92 is: 75,438.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,986.04 : 137,981.52 = 54,664.92 : x
  2. Step 2: Convert to fraction form
    99,986.04/137,981.52 = 54,664.92/x
  3. Step 3: Cross multiply
    99,986.04x = 137,981.52 × 54,664.92
  4. Step 4: Simplify right side
    99,986.04x = 7,542,748,752.28
  5. Step 5: Solve for x
    x = 7,542,748,752.28/99,986.04
  6. Step 6: Final answer
    x = 75,438.02

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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.