Home / 127,656.48-176,205.60-87,355.20

Finding the Fourth Proportional to 127,656.48, 176,205.60 and 87,355.20

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Solution

The fourth proportional to 127,656.48, 176,205.60 and 87,355.20 is: 120,577.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,656.48 : 176,205.60 = 87,355.20 : x
  2. Step 2: Convert to fraction form
    127,656.48/176,205.60 = 87,355.20/x
  3. Step 3: Cross multiply
    127,656.48x = 176,205.60 × 87,355.20
  4. Step 4: Simplify right side
    127,656.48x = 15,392,475,429.12
  5. Step 5: Solve for x
    x = 15,392,475,429.12/127,656.48
  6. Step 6: Final answer
    x = 120,577.31

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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.