Home / 142,442.52-213,513.12-53,657.64

Finding the Fourth Proportional to 142,442.52, 213,513.12 and 53,657.64

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Solution

The fourth proportional to 142,442.52, 213,513.12 and 53,657.64 is: 80,429.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,442.52 : 213,513.12 = 53,657.64 : x
  2. Step 2: Convert to fraction form
    142,442.52/213,513.12 = 53,657.64/x
  3. Step 3: Cross multiply
    142,442.52x = 213,513.12 × 53,657.64
  4. Step 4: Simplify right side
    142,442.52x = 11,456,610,128.24
  5. Step 5: Solve for x
    x = 11,456,610,128.24/142,442.52
  6. Step 6: Final answer
    x = 80,429.71

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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.