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Finding the Fourth Proportional to 100,415.76, 150,422.82 and 60,412.68

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Solution

The fourth proportional to 100,415.76, 150,422.82 and 60,412.68 is: 90,498.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,415.76 : 150,422.82 = 60,412.68 : x
  2. Step 2: Convert to fraction form
    100,415.76/150,422.82 = 60,412.68/x
  3. Step 3: Cross multiply
    100,415.76x = 150,422.82 × 60,412.68
  4. Step 4: Simplify right side
    100,415.76x = 9,087,445,689.36
  5. Step 5: Solve for x
    x = 9,087,445,689.36/100,415.76
  6. Step 6: Final answer
    x = 90,498.20

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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.