Home / 131,622.60-197,174.70-78,875.40

Finding the Fourth Proportional to 131,622.60, 197,174.70 and 78,875.40

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Solution

The fourth proportional to 131,622.60, 197,174.70 and 78,875.40 is: 118,157.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,622.60 : 197,174.70 = 78,875.40 : x
  2. Step 2: Convert to fraction form
    131,622.60/197,174.70 = 78,875.40/x
  3. Step 3: Cross multiply
    131,622.60x = 197,174.70 × 78,875.40
  4. Step 4: Simplify right side
    131,622.60x = 15,552,233,332.38
  5. Step 5: Solve for x
    x = 15,552,233,332.38/131,622.60
  6. Step 6: Final answer
    x = 118,157.77

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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.