Home / 149,689.86-206,570.15-81,707.27

Finding the Fourth Proportional to 149,689.86, 206,570.15 and 81,707.27

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Solution

The fourth proportional to 149,689.86, 206,570.15 and 81,707.27 is: 112,755.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,689.86 : 206,570.15 = 81,707.27 : x
  2. Step 2: Convert to fraction form
    149,689.86/206,570.15 = 81,707.27/x
  3. Step 3: Cross multiply
    149,689.86x = 206,570.15 × 81,707.27
  4. Step 4: Simplify right side
    149,689.86x = 16,878,281,885.01
  5. Step 5: Solve for x
    x = 16,878,281,885.01/149,689.86
  6. Step 6: Final answer
    x = 112,755.01

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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.