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Finding the Fourth Proportional to 121,510.72, 167,697.76 and 67,814.40

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Solution

The fourth proportional to 121,510.72, 167,697.76 and 67,814.40 is: 93,591.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,510.72 : 167,697.76 = 67,814.40 : x
  2. Step 2: Convert to fraction form
    121,510.72/167,697.76 = 67,814.40/x
  3. Step 3: Cross multiply
    121,510.72x = 167,697.76 × 67,814.40
  4. Step 4: Simplify right side
    121,510.72x = 11,372,322,975.74
  5. Step 5: Solve for x
    x = 11,372,322,975.74/121,510.72
  6. Step 6: Final answer
    x = 93,591.11

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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.