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Finding the Fourth Proportional to 121,535.70, 182,303.55 and 111,912.90

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Solution

The fourth proportional to 121,535.70, 182,303.55 and 111,912.90 is: 167,869.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,535.70 : 182,303.55 = 111,912.90 : x
  2. Step 2: Convert to fraction form
    121,535.70/182,303.55 = 111,912.90/x
  3. Step 3: Cross multiply
    121,535.70x = 182,303.55 × 111,912.90
  4. Step 4: Simplify right side
    121,535.70x = 20,402,118,960.80
  5. Step 5: Solve for x
    x = 20,402,118,960.80/121,535.70
  6. Step 6: Final answer
    x = 167,869.35

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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.