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Finding the Fourth Proportional to 131,751.60, 197,368.20 and 79,004.40

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Solution

The fourth proportional to 131,751.60, 197,368.20 and 79,004.40 is: 118,351.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,751.60 : 197,368.20 = 79,004.40 : x
  2. Step 2: Convert to fraction form
    131,751.60/197,368.20 = 79,004.40/x
  3. Step 3: Cross multiply
    131,751.60x = 197,368.20 × 79,004.40
  4. Step 4: Simplify right side
    131,751.60x = 15,592,956,220.08
  5. Step 5: Solve for x
    x = 15,592,956,220.08/131,751.60
  6. Step 6: Final answer
    x = 118,351.17

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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.