Home / 121,381.32-167,505.53-67,666.78

Finding the Fourth Proportional to 121,381.32, 167,505.53 and 67,666.78

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Solution

The fourth proportional to 121,381.32, 167,505.53 and 67,666.78 is: 93,379.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,381.32 : 167,505.53 = 67,666.78 : x
  2. Step 2: Convert to fraction form
    121,381.32/167,505.53 = 67,666.78/x
  3. Step 3: Cross multiply
    121,381.32x = 167,505.53 × 67,666.78
  4. Step 4: Simplify right side
    121,381.32x = 11,334,559,847.29
  5. Step 5: Solve for x
    x = 11,334,559,847.29/121,381.32
  6. Step 6: Final answer
    x = 93,379.77

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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.