Home / 149,708.32-206,598.02-81,726.80

Finding the Fourth Proportional to 149,708.32, 206,598.02 and 81,726.80

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Solution

The fourth proportional to 149,708.32, 206,598.02 and 81,726.80 is: 112,783.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,708.32 : 206,598.02 = 81,726.80 : x
  2. Step 2: Convert to fraction form
    149,708.32/206,598.02 = 81,726.80/x
  3. Step 3: Cross multiply
    149,708.32x = 206,598.02 × 81,726.80
  4. Step 4: Simplify right side
    149,708.32x = 16,884,595,060.94
  5. Step 5: Solve for x
    x = 16,884,595,060.94/149,708.32
  6. Step 6: Final answer
    x = 112,783.28

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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.