Home / 121,151.16-181,666.53-76,744.26

Finding the Fourth Proportional to 121,151.16, 181,666.53 and 76,744.26

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Solution

The fourth proportional to 121,151.16, 181,666.53 and 76,744.26 is: 115,078.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,151.16 : 181,666.53 = 76,744.26 : x
  2. Step 2: Convert to fraction form
    121,151.16/181,666.53 = 76,744.26/x
  3. Step 3: Cross multiply
    121,151.16x = 181,666.53 × 76,744.26
  4. Step 4: Simplify right side
    121,151.16x = 13,941,863,411.62
  5. Step 5: Solve for x
    x = 13,941,863,411.62/121,151.16
  6. Step 6: Final answer
    x = 115,078.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.