Home / 142,008.48-195,972.35-78,346.26

Finding the Fourth Proportional to 142,008.48, 195,972.35 and 78,346.26

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Solution

The fourth proportional to 142,008.48, 195,972.35 and 78,346.26 is: 108,118.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,008.48 : 195,972.35 = 78,346.26 : x
  2. Step 2: Convert to fraction form
    142,008.48/195,972.35 = 78,346.26/x
  3. Step 3: Cross multiply
    142,008.48x = 195,972.35 × 78,346.26
  4. Step 4: Simplify right side
    142,008.48x = 15,353,700,294.18
  5. Step 5: Solve for x
    x = 15,353,700,294.18/142,008.48
  6. Step 6: Final answer
    x = 108,118.19

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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.