Home / 115,965.60-173,948.40-89,689.20

Finding the Fourth Proportional to 115,965.60, 173,948.40 and 89,689.20

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Solution

The fourth proportional to 115,965.60, 173,948.40 and 89,689.20 is: 134,533.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,965.60 : 173,948.40 = 89,689.20 : x
  2. Step 2: Convert to fraction form
    115,965.60/173,948.40 = 89,689.20/x
  3. Step 3: Cross multiply
    115,965.60x = 173,948.40 × 89,689.20
  4. Step 4: Simplify right side
    115,965.60x = 15,601,292,837.28
  5. Step 5: Solve for x
    x = 15,601,292,837.28/115,965.60
  6. Step 6: Final answer
    x = 134,533.80

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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.