Home / 131,448.18-197,088.20-78,125.93

Finding the Fourth Proportional to 131,448.18, 197,088.20 and 78,125.93

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Solution

The fourth proportional to 131,448.18, 197,088.20 and 78,125.93 is: 117,138.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,448.18 : 197,088.20 = 78,125.93 : x
  2. Step 2: Convert to fraction form
    131,448.18/197,088.20 = 78,125.93/x
  3. Step 3: Cross multiply
    131,448.18x = 197,088.20 × 78,125.93
  4. Step 4: Simplify right side
    131,448.18x = 15,397,698,917.03
  5. Step 5: Solve for x
    x = 15,397,698,917.03/131,448.18
  6. Step 6: Final answer
    x = 117,138.93

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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.