Home / 99,660.60-137,497.10-63,870.32

Finding the Fourth Proportional to 99,660.60, 137,497.10 and 63,870.32

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Solution

The fourth proportional to 99,660.60, 137,497.10 and 63,870.32 is: 88,118.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,660.60 : 137,497.10 = 63,870.32 : x
  2. Step 2: Convert to fraction form
    99,660.60/137,497.10 = 63,870.32/x
  3. Step 3: Cross multiply
    99,660.60x = 137,497.10 × 63,870.32
  4. Step 4: Simplify right side
    99,660.60x = 8,781,983,776.07
  5. Step 5: Solve for x
    x = 8,781,983,776.07/99,660.60
  6. Step 6: Final answer
    x = 88,118.91

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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.