Home / 99,215.28-137,035.80-72,314.64

Finding the Fourth Proportional to 99,215.28, 137,035.80 and 72,314.64

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Solution

The fourth proportional to 99,215.28, 137,035.80 and 72,314.64 is: 99,880.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,215.28 : 137,035.80 = 72,314.64 : x
  2. Step 2: Convert to fraction form
    99,215.28/137,035.80 = 72,314.64/x
  3. Step 3: Cross multiply
    99,215.28x = 137,035.80 × 72,314.64
  4. Step 4: Simplify right side
    99,215.28x = 9,909,694,544.11
  5. Step 5: Solve for x
    x = 9,909,694,544.11/99,215.28
  6. Step 6: Final answer
    x = 99,880.73

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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.