Home / 103,158.20-142,345.58-62,857.28

Finding the Fourth Proportional to 103,158.20, 142,345.58 and 62,857.28

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Solution

The fourth proportional to 103,158.20, 142,345.58 and 62,857.28 is: 86,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,158.20 : 142,345.58 = 62,857.28 : x
  2. Step 2: Convert to fraction form
    103,158.20/142,345.58 = 62,857.28/x
  3. Step 3: Cross multiply
    103,158.20x = 142,345.58 × 62,857.28
  4. Step 4: Simplify right side
    103,158.20x = 8,947,455,978.82
  5. Step 5: Solve for x
    x = 8,947,455,978.82/103,158.20
  6. Step 6: Final answer
    x = 86,735.29

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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.