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Finding the Fourth Proportional to 98,770.88, 148,163.88 and 42,612.32

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Solution

The fourth proportional to 98,770.88, 148,163.88 and 42,612.32 is: 63,921.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,770.88 : 148,163.88 = 42,612.32 : x
  2. Step 2: Convert to fraction form
    98,770.88/148,163.88 = 42,612.32/x
  3. Step 3: Cross multiply
    98,770.88x = 148,163.88 × 42,612.32
  4. Step 4: Simplify right side
    98,770.88x = 6,313,606,667.00
  5. Step 5: Solve for x
    x = 6,313,606,667.00/98,770.88
  6. Step 6: Final answer
    x = 63,921.74

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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.