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Finding the Fourth Proportional to 104,930.80, 157,415.40 and 42,607.60

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Solution

The fourth proportional to 104,930.80, 157,415.40 and 42,607.60 is: 63,919.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,930.80 : 157,415.40 = 42,607.60 : x
  2. Step 2: Convert to fraction form
    104,930.80/157,415.40 = 42,607.60/x
  3. Step 3: Cross multiply
    104,930.80x = 157,415.40 × 42,607.60
  4. Step 4: Simplify right side
    104,930.80x = 6,707,092,397.04
  5. Step 5: Solve for x
    x = 6,707,092,397.04/104,930.80
  6. Step 6: Final answer
    x = 63,919.20

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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.