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Finding the Fourth Proportional to 101,880.80, 152,820.48 and 55,428.96

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Solution

The fourth proportional to 101,880.80, 152,820.48 and 55,428.96 is: 83,143.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,880.80 : 152,820.48 = 55,428.96 : x
  2. Step 2: Convert to fraction form
    101,880.80/152,820.48 = 55,428.96/x
  3. Step 3: Cross multiply
    101,880.80x = 152,820.48 × 55,428.96
  4. Step 4: Simplify right side
    101,880.80x = 8,470,680,273.10
  5. Step 5: Solve for x
    x = 8,470,680,273.10/101,880.80
  6. Step 6: Final answer
    x = 83,143.05

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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.