Home / 123,531.02-170,472.90-66,942.40

Finding the Fourth Proportional to 123,531.02, 170,472.90 and 66,942.40

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Solution

The fourth proportional to 123,531.02, 170,472.90 and 66,942.40 is: 92,380.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,531.02 : 170,472.90 = 66,942.40 : x
  2. Step 2: Convert to fraction form
    123,531.02/170,472.90 = 66,942.40/x
  3. Step 3: Cross multiply
    123,531.02x = 170,472.90 × 66,942.40
  4. Step 4: Simplify right side
    123,531.02x = 11,411,865,060.96
  5. Step 5: Solve for x
    x = 11,411,865,060.96/123,531.02
  6. Step 6: Final answer
    x = 92,380.56

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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.