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Finding the Fourth Proportional to 84,963.20, 127,444.80 and 73,153.40

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Solution

The fourth proportional to 84,963.20, 127,444.80 and 73,153.40 is: 109,730.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,963.20 : 127,444.80 = 73,153.40 : x
  2. Step 2: Convert to fraction form
    84,963.20/127,444.80 = 73,153.40/x
  3. Step 3: Cross multiply
    84,963.20x = 127,444.80 × 73,153.40
  4. Step 4: Simplify right side
    84,963.20x = 9,323,020,432.32
  5. Step 5: Solve for x
    x = 9,323,020,432.32/84,963.20
  6. Step 6: Final answer
    x = 109,730.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.