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Finding the Fourth Proportional to 121,154.99, 167,192.10 and 67,439.93

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Solution

The fourth proportional to 121,154.99, 167,192.10 and 67,439.93 is: 93,066.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,154.99 : 167,192.10 = 67,439.93 : x
  2. Step 2: Convert to fraction form
    121,154.99/167,192.10 = 67,439.93/x
  3. Step 3: Cross multiply
    121,154.99x = 167,192.10 × 67,439.93
  4. Step 4: Simplify right side
    121,154.99x = 11,275,423,520.55
  5. Step 5: Solve for x
    x = 11,275,423,520.55/121,154.99
  6. Step 6: Final answer
    x = 93,066.11

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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.