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Finding the Fourth Proportional to 148,770.30, 205,302.78 and 81,702.30

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Solution

The fourth proportional to 148,770.30, 205,302.78 and 81,702.30 is: 112,749.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,770.30 : 205,302.78 = 81,702.30 : x
  2. Step 2: Convert to fraction form
    148,770.30/205,302.78 = 81,702.30/x
  3. Step 3: Cross multiply
    148,770.30x = 205,302.78 × 81,702.30
  4. Step 4: Simplify right side
    148,770.30x = 16,773,709,322.39
  5. Step 5: Solve for x
    x = 16,773,709,322.39/148,770.30
  6. Step 6: Final answer
    x = 112,749.05

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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.