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Finding the Fourth Proportional to 148,648.08, 205,132.32 and 81,580.08

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Solution

The fourth proportional to 148,648.08, 205,132.32 and 81,580.08 is: 112,579.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,648.08 : 205,132.32 = 81,580.08 : x
  2. Step 2: Convert to fraction form
    148,648.08/205,132.32 = 81,580.08/x
  3. Step 3: Cross multiply
    148,648.08x = 205,132.32 × 81,580.08
  4. Step 4: Simplify right side
    148,648.08x = 16,734,711,076.19
  5. Step 5: Solve for x
    x = 16,734,711,076.19/148,648.08
  6. Step 6: Final answer
    x = 112,579.40

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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.