Home / 165,340.80-247,838.40-90,345.60

Finding the Fourth Proportional to 165,340.80, 247,838.40 and 90,345.60

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Solution

The fourth proportional to 165,340.80, 247,838.40 and 90,345.60 is: 135,423.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,340.80 : 247,838.40 = 90,345.60 : x
  2. Step 2: Convert to fraction form
    165,340.80/247,838.40 = 90,345.60/x
  3. Step 3: Cross multiply
    165,340.80x = 247,838.40 × 90,345.60
  4. Step 4: Simplify right side
    165,340.80x = 22,391,108,951.04
  5. Step 5: Solve for x
    x = 22,391,108,951.04/165,340.80
  6. Step 6: Final answer
    x = 135,423.98

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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.