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Finding the Fourth Proportional to 102,880.80, 141,944.40 and 60,415.20

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Solution

The fourth proportional to 102,880.80, 141,944.40 and 60,415.20 is: 83,354.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,880.80 : 141,944.40 = 60,415.20 : x
  2. Step 2: Convert to fraction form
    102,880.80/141,944.40 = 60,415.20/x
  3. Step 3: Cross multiply
    102,880.80x = 141,944.40 × 60,415.20
  4. Step 4: Simplify right side
    102,880.80x = 8,575,599,314.88
  5. Step 5: Solve for x
    x = 8,575,599,314.88/102,880.80
  6. Step 6: Final answer
    x = 83,354.71

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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.