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Finding the Fourth Proportional to 131,894.40, 197,702.16 and 43,124.16

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Solution

The fourth proportional to 131,894.40, 197,702.16 and 43,124.16 is: 64,640.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,894.40 : 197,702.16 = 43,124.16 : x
  2. Step 2: Convert to fraction form
    131,894.40/197,702.16 = 43,124.16/x
  3. Step 3: Cross multiply
    131,894.40x = 197,702.16 × 43,124.16
  4. Step 4: Simplify right side
    131,894.40x = 8,525,739,580.19
  5. Step 5: Solve for x
    x = 8,525,739,580.19/131,894.40
  6. Step 6: Final answer
    x = 64,640.65

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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.