Home / 163,616.48-225,720.24-103,139.36

Finding the Fourth Proportional to 163,616.48, 225,720.24 and 103,139.36

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Solution

The fourth proportional to 163,616.48, 225,720.24 and 103,139.36 is: 142,287.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,616.48 : 225,720.24 = 103,139.36 : x
  2. Step 2: Convert to fraction form
    163,616.48/225,720.24 = 103,139.36/x
  3. Step 3: Cross multiply
    163,616.48x = 225,720.24 × 103,139.36
  4. Step 4: Simplify right side
    163,616.48x = 23,280,641,092.65
  5. Step 5: Solve for x
    x = 23,280,641,092.65/163,616.48
  6. Step 6: Final answer
    x = 142,287.87

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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.