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Finding the Fourth Proportional to 124,155, 186,269.22 and 71,602.20

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Solution

The fourth proportional to 124,155, 186,269.22 and 71,602.20 is: 107,424.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,155 : 186,269.22 = 71,602.20 : x
  2. Step 2: Convert to fraction form
    124,155/186,269.22 = 71,602.20/x
  3. Step 3: Cross multiply
    124,155x = 186,269.22 × 71,602.20
  4. Step 4: Simplify right side
    124,155x = 13,337,285,944.28
  5. Step 5: Solve for x
    x = 13,337,285,944.28/124,155
  6. Step 6: Final answer
    x = 107,424.48

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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.