Home / 123,666.48-170,684.04-72,695.70

Finding the Fourth Proportional to 123,666.48, 170,684.04 and 72,695.70

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Solution

The fourth proportional to 123,666.48, 170,684.04 and 72,695.70 is: 100,334.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,666.48 : 170,684.04 = 72,695.70 : x
  2. Step 2: Convert to fraction form
    123,666.48/170,684.04 = 72,695.70/x
  3. Step 3: Cross multiply
    123,666.48x = 170,684.04 × 72,695.70
  4. Step 4: Simplify right side
    123,666.48x = 12,407,995,766.63
  5. Step 5: Solve for x
    x = 12,407,995,766.63/123,666.48
  6. Step 6: Final answer
    x = 100,334.35

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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.