Home / 155,721.90-233,437.05-121,969.20

Finding the Fourth Proportional to 155,721.90, 233,437.05 and 121,969.20

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Solution

The fourth proportional to 155,721.90, 233,437.05 and 121,969.20 is: 182,839.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,721.90 : 233,437.05 = 121,969.20 : x
  2. Step 2: Convert to fraction form
    155,721.90/233,437.05 = 121,969.20/x
  3. Step 3: Cross multiply
    155,721.90x = 233,437.05 × 121,969.20
  4. Step 4: Simplify right side
    155,721.90x = 28,472,130,238.86
  5. Step 5: Solve for x
    x = 28,472,130,238.86/155,721.90
  6. Step 6: Final answer
    x = 182,839.60

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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.