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Finding the Fourth Proportional to 136,094.88, 187,810.94 and 76,478.88

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Solution

The fourth proportional to 136,094.88, 187,810.94 and 76,478.88 is: 105,540.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,094.88 : 187,810.94 = 76,478.88 : x
  2. Step 2: Convert to fraction form
    136,094.88/187,810.94 = 76,478.88/x
  3. Step 3: Cross multiply
    136,094.88x = 187,810.94 × 76,478.88
  4. Step 4: Simplify right side
    136,094.88x = 14,363,570,342.95
  5. Step 5: Solve for x
    x = 14,363,570,342.95/136,094.88
  6. Step 6: Final answer
    x = 105,540.86

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1.5x scale

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.