Home / 90,835.20-136,333.80-53,348.40

Finding the Fourth Proportional to 90,835.20, 136,333.80 and 53,348.40

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Solution

The fourth proportional to 90,835.20, 136,333.80 and 53,348.40 is: 80,070.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,835.20 : 136,333.80 = 53,348.40 : x
  2. Step 2: Convert to fraction form
    90,835.20/136,333.80 = 53,348.40/x
  3. Step 3: Cross multiply
    90,835.20x = 136,333.80 × 53,348.40
  4. Step 4: Simplify right side
    90,835.20x = 7,273,190,095.92
  5. Step 5: Solve for x
    x = 7,273,190,095.92/90,835.20
  6. Step 6: Final answer
    x = 80,070.17

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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.