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Finding the Fourth Proportional to 89,837.20, 125,538.80 and 89,837.20

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Solution

The fourth proportional to 89,837.20, 125,538.80 and 89,837.20 is: 125,538.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,837.20 : 125,538.80 = 89,837.20 : x
  2. Step 2: Convert to fraction form
    89,837.20/125,538.80 = 89,837.20/x
  3. Step 3: Cross multiply
    89,837.20x = 125,538.80 × 89,837.20
  4. Step 4: Simplify right side
    89,837.20x = 11,278,054,283.36
  5. Step 5: Solve for x
    x = 11,278,054,283.36/89,837.20
  6. Step 6: Final answer
    x = 125,538.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.