Home / 99,811.64-137,763.78-64,086.32

Finding the Fourth Proportional to 99,811.64, 137,763.78 and 64,086.32

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Solution

The fourth proportional to 99,811.64, 137,763.78 and 64,086.32 is: 88,454.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,811.64 : 137,763.78 = 64,086.32 : x
  2. Step 2: Convert to fraction form
    99,811.64/137,763.78 = 64,086.32/x
  3. Step 3: Cross multiply
    99,811.64x = 137,763.78 × 64,086.32
  4. Step 4: Simplify right side
    99,811.64x = 8,828,773,689.49
  5. Step 5: Solve for x
    x = 8,828,773,689.49/99,811.64
  6. Step 6: Final answer
    x = 88,454.35

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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.