Home / 121,151.66-181,667.28-76,744.76

Finding the Fourth Proportional to 121,151.66, 181,667.28 and 76,744.76

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Solution

The fourth proportional to 121,151.66, 181,667.28 and 76,744.76 is: 115,079.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,151.66 : 181,667.28 = 76,744.76 : x
  2. Step 2: Convert to fraction form
    121,151.66/181,667.28 = 76,744.76/x
  3. Step 3: Cross multiply
    121,151.66x = 181,667.28 × 76,744.76
  4. Step 4: Simplify right side
    121,151.66x = 13,942,011,803.45
  5. Step 5: Solve for x
    x = 13,942,011,803.45/121,151.66
  6. Step 6: Final answer
    x = 115,079.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.