Home / 142,979.19-214,470.23-43,140.21

Finding the Fourth Proportional to 142,979.19, 214,470.23 and 43,140.21

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Solution

The fourth proportional to 142,979.19, 214,470.23 and 43,140.21 is: 64,710.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,979.19 : 214,470.23 = 43,140.21 : x
  2. Step 2: Convert to fraction form
    142,979.19/214,470.23 = 43,140.21/x
  3. Step 3: Cross multiply
    142,979.19x = 214,470.23 × 43,140.21
  4. Step 4: Simplify right side
    142,979.19x = 9,252,290,760.95
  5. Step 5: Solve for x
    x = 9,252,290,760.95/142,979.19
  6. Step 6: Final answer
    x = 64,710.75

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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.