Home / 120,140.35-165,787.02-66,422.16

Finding the Fourth Proportional to 120,140.35, 165,787.02 and 66,422.16

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Solution

The fourth proportional to 120,140.35, 165,787.02 and 66,422.16 is: 91,658.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,140.35 : 165,787.02 = 66,422.16 : x
  2. Step 2: Convert to fraction form
    120,140.35/165,787.02 = 66,422.16/x
  3. Step 3: Cross multiply
    120,140.35x = 165,787.02 × 66,422.16
  4. Step 4: Simplify right side
    120,140.35x = 11,011,931,968.36
  5. Step 5: Solve for x
    x = 11,011,931,968.36/120,140.35
  6. Step 6: Final answer
    x = 91,658.90

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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.