Home / 124,153.66-171,368.16-81,139.62

Finding the Fourth Proportional to 124,153.66, 171,368.16 and 81,139.62

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Solution

The fourth proportional to 124,153.66, 171,368.16 and 81,139.62 is: 111,996.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,153.66 : 171,368.16 = 81,139.62 : x
  2. Step 2: Convert to fraction form
    124,153.66/171,368.16 = 81,139.62/x
  3. Step 3: Cross multiply
    124,153.66x = 171,368.16 × 81,139.62
  4. Step 4: Simplify right side
    124,153.66x = 13,904,747,720.86
  5. Step 5: Solve for x
    x = 13,904,747,720.86/124,153.66
  6. Step 6: Final answer
    x = 111,996.28

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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.