Home / 108,659.45-149,999.13-68,432.31

Finding the Fourth Proportional to 108,659.45, 149,999.13 and 68,432.31

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Solution

The fourth proportional to 108,659.45, 149,999.13 and 68,432.31 is: 94,467.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,659.45 : 149,999.13 = 68,432.31 : x
  2. Step 2: Convert to fraction form
    108,659.45/149,999.13 = 68,432.31/x
  3. Step 3: Cross multiply
    108,659.45x = 149,999.13 × 68,432.31
  4. Step 4: Simplify right side
    108,659.45x = 10,264,786,963.89
  5. Step 5: Solve for x
    x = 10,264,786,963.89/108,659.45
  6. Step 6: Final answer
    x = 94,467.51

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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.