Home / 123,438.55-170,298.25-91,250.45

Finding the Fourth Proportional to 123,438.55, 170,298.25 and 91,250.45

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Solution

The fourth proportional to 123,438.55, 170,298.25 and 91,250.45 is: 125,890.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,438.55 : 170,298.25 = 91,250.45 : x
  2. Step 2: Convert to fraction form
    123,438.55/170,298.25 = 91,250.45/x
  3. Step 3: Cross multiply
    123,438.55x = 170,298.25 × 91,250.45
  4. Step 4: Simplify right side
    123,438.55x = 15,539,792,372.46
  5. Step 5: Solve for x
    x = 15,539,792,372.46/123,438.55
  6. Step 6: Final answer
    x = 125,890.92

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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.