Home / 103,209.80-142,442.70-60,772.28

Finding the Fourth Proportional to 103,209.80, 142,442.70 and 60,772.28

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Solution

The fourth proportional to 103,209.80, 142,442.70 and 60,772.28 is: 83,873.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,209.80 : 142,442.70 = 60,772.28 : x
  2. Step 2: Convert to fraction form
    103,209.80/142,442.70 = 60,772.28/x
  3. Step 3: Cross multiply
    103,209.80x = 142,442.70 × 60,772.28
  4. Step 4: Simplify right side
    103,209.80x = 8,656,567,648.36
  5. Step 5: Solve for x
    x = 8,656,567,648.36/103,209.80
  6. Step 6: Final answer
    x = 83,873.50

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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.