Home / 103,335.92-155,003.04-68,431.76

Finding the Fourth Proportional to 103,335.92, 155,003.04 and 68,431.76

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Solution

The fourth proportional to 103,335.92, 155,003.04 and 68,431.76 is: 102,647.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,335.92 : 155,003.04 = 68,431.76 : x
  2. Step 2: Convert to fraction form
    103,335.92/155,003.04 = 68,431.76/x
  3. Step 3: Cross multiply
    103,335.92x = 155,003.04 × 68,431.76
  4. Step 4: Simplify right side
    103,335.92x = 10,607,130,832.55
  5. Step 5: Solve for x
    x = 10,607,130,832.55/103,335.92
  6. Step 6: Final answer
    x = 102,647.08

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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.