Home / 142,929.80-197,230.20-79,267.40

Finding the Fourth Proportional to 142,929.80, 197,230.20 and 79,267.40

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Solution

The fourth proportional to 142,929.80, 197,230.20 and 79,267.40 is: 109,381.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,929.80 : 197,230.20 = 79,267.40 : x
  2. Step 2: Convert to fraction form
    142,929.80/197,230.20 = 79,267.40/x
  3. Step 3: Cross multiply
    142,929.80x = 197,230.20 × 79,267.40
  4. Step 4: Simplify right side
    142,929.80x = 15,633,925,155.48
  5. Step 5: Solve for x
    x = 15,633,925,155.48/142,929.80
  6. Step 6: Final answer
    x = 109,381.84

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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.