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Finding the Fourth Proportional to 147,618.84, 203,644.89 and 87,148.29

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Solution

The fourth proportional to 147,618.84, 203,644.89 and 87,148.29 is: 120,223.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,618.84 : 203,644.89 = 87,148.29 : x
  2. Step 2: Convert to fraction form
    147,618.84/203,644.89 = 87,148.29/x
  3. Step 3: Cross multiply
    147,618.84x = 203,644.89 × 87,148.29
  4. Step 4: Simplify right side
    147,618.84x = 17,747,303,930.74
  5. Step 5: Solve for x
    x = 17,747,303,930.74/147,618.84
  6. Step 6: Final answer
    x = 120,223.84

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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.