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Finding the Fourth Proportional to 105,079.10, 145,009.11 and 67,353.32

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Solution

The fourth proportional to 105,079.10, 145,009.11 and 67,353.32 is: 92,947.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,079.10 : 145,009.11 = 67,353.32 : x
  2. Step 2: Convert to fraction form
    105,079.10/145,009.11 = 67,353.32/x
  3. Step 3: Cross multiply
    105,079.10x = 145,009.11 × 67,353.32
  4. Step 4: Simplify right side
    105,079.10x = 9,766,844,988.75
  5. Step 5: Solve for x
    x = 9,766,844,988.75/105,079.10
  6. Step 6: Final answer
    x = 92,947.55

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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.