Home / 142,335.48-196,418.28-78,672.96

Finding the Fourth Proportional to 142,335.48, 196,418.28 and 78,672.96

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Solution

The fourth proportional to 142,335.48, 196,418.28 and 78,672.96 is: 108,566.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,335.48 : 196,418.28 = 78,672.96 : x
  2. Step 2: Convert to fraction form
    142,335.48/196,418.28 = 78,672.96/x
  3. Step 3: Cross multiply
    142,335.48x = 196,418.28 × 78,672.96
  4. Step 4: Simplify right side
    142,335.48x = 15,452,807,485.71
  5. Step 5: Solve for x
    x = 15,452,807,485.71/142,335.48
  6. Step 6: Final answer
    x = 108,566.10

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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.