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Finding the Fourth Proportional to 127,868.60, 191,640.90 and 48,877.40

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Solution

The fourth proportional to 127,868.60, 191,640.90 and 48,877.40 is: 73,254.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,868.60 : 191,640.90 = 48,877.40 : x
  2. Step 2: Convert to fraction form
    127,868.60/191,640.90 = 48,877.40/x
  3. Step 3: Cross multiply
    127,868.60x = 191,640.90 × 48,877.40
  4. Step 4: Simplify right side
    127,868.60x = 9,366,908,925.66
  5. Step 5: Solve for x
    x = 9,366,908,925.66/127,868.60
  6. Step 6: Final answer
    x = 73,254.18

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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.