Home / 125,628.57-173,378.07-85,431.51

Finding the Fourth Proportional to 125,628.57, 173,378.07 and 85,431.51

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Solution

The fourth proportional to 125,628.57, 173,378.07 and 85,431.51 is: 117,902.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,628.57 : 173,378.07 = 85,431.51 : x
  2. Step 2: Convert to fraction form
    125,628.57/173,378.07 = 85,431.51/x
  3. Step 3: Cross multiply
    125,628.57x = 173,378.07 × 85,431.51
  4. Step 4: Simplify right side
    125,628.57x = 14,811,950,320.99
  5. Step 5: Solve for x
    x = 14,811,950,320.99/125,628.57
  6. Step 6: Final answer
    x = 117,902.72

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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.