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Finding the Fourth Proportional to 147,359.70, 203,356.39 and 80,291.70

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Solution

The fourth proportional to 147,359.70, 203,356.39 and 80,291.70 is: 110,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,359.70 : 203,356.39 = 80,291.70 : x
  2. Step 2: Convert to fraction form
    147,359.70/203,356.39 = 80,291.70/x
  3. Step 3: Cross multiply
    147,359.70x = 203,356.39 × 80,291.70
  4. Step 4: Simplify right side
    147,359.70x = 16,327,830,258.96
  5. Step 5: Solve for x
    x = 16,327,830,258.96/147,359.70
  6. Step 6: Final answer
    x = 110,802.55

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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.