Home / 121,154.80-167,160.04-72,744.16

Finding the Fourth Proportional to 121,154.80, 167,160.04 and 72,744.16

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Solution

The fourth proportional to 121,154.80, 167,160.04 and 72,744.16 is: 100,366.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.80 : 167,160.04 = 72,744.16 : x
  2. Step 2: Convert to fraction form
    121,154.80/167,160.04 = 72,744.16/x
  3. Step 3: Cross multiply
    121,154.80x = 167,160.04 × 72,744.16
  4. Step 4: Simplify right side
    121,154.80x = 12,159,916,695.37
  5. Step 5: Solve for x
    x = 12,159,916,695.37/121,154.80
  6. Step 6: Final answer
    x = 100,366.78

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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.