Home / 121,986.53-182,934.27-42,001.89

Finding the Fourth Proportional to 121,986.53, 182,934.27 and 42,001.89

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Solution

The fourth proportional to 121,986.53, 182,934.27 and 42,001.89 is: 62,987.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,986.53 : 182,934.27 = 42,001.89 : x
  2. Step 2: Convert to fraction form
    121,986.53/182,934.27 = 42,001.89/x
  3. Step 3: Cross multiply
    121,986.53x = 182,934.27 × 42,001.89
  4. Step 4: Simplify right side
    121,986.53x = 7,683,585,085.77
  5. Step 5: Solve for x
    x = 7,683,585,085.77/121,986.53
  6. Step 6: Final answer
    x = 62,987.16

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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.