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Finding the Fourth Proportional to 123,302.55, 170,157.50 and 66,713.93

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Solution

The fourth proportional to 123,302.55, 170,157.50 and 66,713.93 is: 92,065.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,302.55 : 170,157.50 = 66,713.93 : x
  2. Step 2: Convert to fraction form
    123,302.55/170,157.50 = 66,713.93/x
  3. Step 3: Cross multiply
    123,302.55x = 170,157.50 × 66,713.93
  4. Step 4: Simplify right side
    123,302.55x = 11,351,875,543.98
  5. Step 5: Solve for x
    x = 11,351,875,543.98/123,302.55
  6. Step 6: Final answer
    x = 92,065.21

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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.