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Finding the Fourth Proportional to 123,655.40, 170,647.52 and 69,937.84

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Solution

The fourth proportional to 123,655.40, 170,647.52 and 69,937.84 is: 96,515.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,655.40 : 170,647.52 = 69,937.84 : x
  2. Step 2: Convert to fraction form
    123,655.40/170,647.52 = 69,937.84/x
  3. Step 3: Cross multiply
    123,655.40x = 170,647.52 × 69,937.84
  4. Step 4: Simplify right side
    123,655.40x = 11,934,718,950.16
  5. Step 5: Solve for x
    x = 11,934,718,950.16/123,655.40
  6. Step 6: Final answer
    x = 96,515.95

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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.