Home / 99,916.79-137,977.25-64,169.08

Finding the Fourth Proportional to 99,916.79, 137,977.25 and 64,169.08

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Solution

The fourth proportional to 99,916.79, 137,977.25 and 64,169.08 is: 88,612.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,916.79 : 137,977.25 = 64,169.08 : x
  2. Step 2: Convert to fraction form
    99,916.79/137,977.25 = 64,169.08/x
  3. Step 3: Cross multiply
    99,916.79x = 137,977.25 × 64,169.08
  4. Step 4: Simplify right side
    99,916.79x = 8,853,872,765.63
  5. Step 5: Solve for x
    x = 8,853,872,765.63/99,916.79
  6. Step 6: Final answer
    x = 88,612.46

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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.