Home / 115,403.40-173,105.10-70,885.80

Finding the Fourth Proportional to 115,403.40, 173,105.10 and 70,885.80

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Solution

The fourth proportional to 115,403.40, 173,105.10 and 70,885.80 is: 106,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,403.40 : 173,105.10 = 70,885.80 : x
  2. Step 2: Convert to fraction form
    115,403.40/173,105.10 = 70,885.80/x
  3. Step 3: Cross multiply
    115,403.40x = 173,105.10 × 70,885.80
  4. Step 4: Simplify right side
    115,403.40x = 12,270,693,497.58
  5. Step 5: Solve for x
    x = 12,270,693,497.58/115,403.40
  6. Step 6: Final answer
    x = 106,328.70

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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.