Home / 109,702.20-151,352.10-71,444.28

Finding the Fourth Proportional to 109,702.20, 151,352.10 and 71,444.28

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Solution

The fourth proportional to 109,702.20, 151,352.10 and 71,444.28 is: 98,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,702.20 : 151,352.10 = 71,444.28 : x
  2. Step 2: Convert to fraction form
    109,702.20/151,352.10 = 71,444.28/x
  3. Step 3: Cross multiply
    109,702.20x = 151,352.10 × 71,444.28
  4. Step 4: Simplify right side
    109,702.20x = 10,813,241,810.99
  5. Step 5: Solve for x
    x = 10,813,241,810.99/109,702.20
  6. Step 6: Final answer
    x = 98,569.05

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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.