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Finding the Fourth Proportional to 98,460.88, 135,874.12 and 53,749.20

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Solution

The fourth proportional to 98,460.88, 135,874.12 and 53,749.20 is: 74,172.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,460.88 : 135,874.12 = 53,749.20 : x
  2. Step 2: Convert to fraction form
    98,460.88/135,874.12 = 53,749.20/x
  3. Step 3: Cross multiply
    98,460.88x = 135,874.12 × 53,749.20
  4. Step 4: Simplify right side
    98,460.88x = 7,303,125,250.70
  5. Step 5: Solve for x
    x = 7,303,125,250.70/98,460.88
  6. Step 6: Final answer
    x = 74,172.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.