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Finding the Fourth Proportional to 144,707.70, 217,061.55 and 130,422.90

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Solution

The fourth proportional to 144,707.70, 217,061.55 and 130,422.90 is: 195,634.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,707.70 : 217,061.55 = 130,422.90 : x
  2. Step 2: Convert to fraction form
    144,707.70/217,061.55 = 130,422.90/x
  3. Step 3: Cross multiply
    144,707.70x = 217,061.55 × 130,422.90
  4. Step 4: Simplify right side
    144,707.70x = 28,309,796,829.50
  5. Step 5: Solve for x
    x = 28,309,796,829.50/144,707.70
  6. Step 6: Final answer
    x = 195,634.35

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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.