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Finding the Fourth Proportional to 136,125.52, 187,856.48 and 75,698.72

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Solution

The fourth proportional to 136,125.52, 187,856.48 and 75,698.72 is: 104,466.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,125.52 : 187,856.48 = 75,698.72 : x
  2. Step 2: Convert to fraction form
    136,125.52/187,856.48 = 75,698.72/x
  3. Step 3: Cross multiply
    136,125.52x = 187,856.48 × 75,698.72
  4. Step 4: Simplify right side
    136,125.52x = 14,220,495,079.71
  5. Step 5: Solve for x
    x = 14,220,495,079.71/136,125.52
  6. Step 6: Final answer
    x = 104,466.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.