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Finding the Fourth Proportional to 147,363.71, 203,386.52 and 86,949.32

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Solution

The fourth proportional to 147,363.71, 203,386.52 and 86,949.32 is: 120,004.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,363.71 : 203,386.52 = 86,949.32 : x
  2. Step 2: Convert to fraction form
    147,363.71/203,386.52 = 86,949.32/x
  3. Step 3: Cross multiply
    147,363.71x = 203,386.52 × 86,949.32
  4. Step 4: Simplify right side
    147,363.71x = 17,684,318,811.61
  5. Step 5: Solve for x
    x = 17,684,318,811.61/147,363.71
  6. Step 6: Final answer
    x = 120,004.58

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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.