Home / 151,969.16-209,721.66-83,990.52

Finding the Fourth Proportional to 151,969.16, 209,721.66 and 83,990.52

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Solution

The fourth proportional to 151,969.16, 209,721.66 and 83,990.52 is: 115,909.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,969.16 : 209,721.66 = 83,990.52 : x
  2. Step 2: Convert to fraction form
    151,969.16/209,721.66 = 83,990.52/x
  3. Step 3: Cross multiply
    151,969.16x = 209,721.66 × 83,990.52
  4. Step 4: Simplify right side
    151,969.16x = 17,614,630,963.70
  5. Step 5: Solve for x
    x = 17,614,630,963.70/151,969.16
  6. Step 6: Final answer
    x = 115,909.25

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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.