Home / 131,569.10-197,353.65-78,346.70

Finding the Fourth Proportional to 131,569.10, 197,353.65 and 78,346.70

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Solution

The fourth proportional to 131,569.10, 197,353.65 and 78,346.70 is: 117,520.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,569.10 : 197,353.65 = 78,346.70 : x
  2. Step 2: Convert to fraction form
    131,569.10/197,353.65 = 78,346.70/x
  3. Step 3: Cross multiply
    131,569.10x = 197,353.65 × 78,346.70
  4. Step 4: Simplify right side
    131,569.10x = 15,462,007,210.46
  5. Step 5: Solve for x
    x = 15,462,007,210.46/131,569.10
  6. Step 6: Final answer
    x = 117,520.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.