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Finding the Fourth Proportional to 70,833.40, 106,250.10 and 68,111.80

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Solution

The fourth proportional to 70,833.40, 106,250.10 and 68,111.80 is: 102,167.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,833.40 : 106,250.10 = 68,111.80 : x
  2. Step 2: Convert to fraction form
    70,833.40/106,250.10 = 68,111.80/x
  3. Step 3: Cross multiply
    70,833.40x = 106,250.10 × 68,111.80
  4. Step 4: Simplify right side
    70,833.40x = 7,236,885,561.18
  5. Step 5: Solve for x
    x = 7,236,885,561.18/70,833.40
  6. Step 6: Final answer
    x = 102,167.70

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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.