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Finding the Fourth Proportional to 142,707.40, 214,010.70 and 49,191.40

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Solution

The fourth proportional to 142,707.40, 214,010.70 and 49,191.40 is: 73,769.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,707.40 : 214,010.70 = 49,191.40 : x
  2. Step 2: Convert to fraction form
    142,707.40/214,010.70 = 49,191.40/x
  3. Step 3: Cross multiply
    142,707.40x = 214,010.70 × 49,191.40
  4. Step 4: Simplify right side
    142,707.40x = 10,527,485,947.98
  5. Step 5: Solve for x
    x = 10,527,485,947.98/142,707.40
  6. Step 6: Final answer
    x = 73,769.73

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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.