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Finding the Fourth Proportional to 119,912.87, 179,888.27 and 45,038.70

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Solution

The fourth proportional to 119,912.87, 179,888.27 and 45,038.70 is: 67,565.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,912.87 : 179,888.27 = 45,038.70 : x
  2. Step 2: Convert to fraction form
    119,912.87/179,888.27 = 45,038.70/x
  3. Step 3: Cross multiply
    119,912.87x = 179,888.27 × 45,038.70
  4. Step 4: Simplify right side
    119,912.87x = 8,101,934,106.98
  5. Step 5: Solve for x
    x = 8,101,934,106.98/119,912.87
  6. Step 6: Final answer
    x = 67,565.18

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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.