Home / 142,352.40-196,446.24-78,690.18

Finding the Fourth Proportional to 142,352.40, 196,446.24 and 78,690.18

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Solution

The fourth proportional to 142,352.40, 196,446.24 and 78,690.18 is: 108,592.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,352.40 : 196,446.24 = 78,690.18 : x
  2. Step 2: Convert to fraction form
    142,352.40/196,446.24 = 78,690.18/x
  3. Step 3: Cross multiply
    142,352.40x = 196,446.24 × 78,690.18
  4. Step 4: Simplify right side
    142,352.40x = 15,458,389,985.92
  5. Step 5: Solve for x
    x = 15,458,389,985.92/142,352.40
  6. Step 6: Final answer
    x = 108,592.41

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1.5x scale

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.