Home / 142,693.36-196,909.21-78,159.26

Finding the Fourth Proportional to 142,693.36, 196,909.21 and 78,159.26

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Solution

The fourth proportional to 142,693.36, 196,909.21 and 78,159.26 is: 107,855.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,693.36 : 196,909.21 = 78,159.26 : x
  2. Step 2: Convert to fraction form
    142,693.36/196,909.21 = 78,159.26/x
  3. Step 3: Cross multiply
    142,693.36x = 196,909.21 × 78,159.26
  4. Step 4: Simplify right side
    142,693.36x = 15,390,278,140.78
  5. Step 5: Solve for x
    x = 15,390,278,140.78/142,693.36
  6. Step 6: Final answer
    x = 107,855.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.