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Finding the Fourth Proportional to 89,296.80, 133,714.80 and 70,864.80

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Solution

The fourth proportional to 89,296.80, 133,714.80 and 70,864.80 is: 106,114.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,296.80 : 133,714.80 = 70,864.80 : x
  2. Step 2: Convert to fraction form
    89,296.80/133,714.80 = 70,864.80/x
  3. Step 3: Cross multiply
    89,296.80x = 133,714.80 × 70,864.80
  4. Step 4: Simplify right side
    89,296.80x = 9,475,672,559.04
  5. Step 5: Solve for x
    x = 9,475,672,559.04/89,296.80
  6. Step 6: Final answer
    x = 106,114.36

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1.5x scale

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.