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Finding the Fourth Proportional to 173,143.80, 259,715.70 and 84,570.30

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Solution

The fourth proportional to 173,143.80, 259,715.70 and 84,570.30 is: 126,855.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,143.80 : 259,715.70 = 84,570.30 : x
  2. Step 2: Convert to fraction form
    173,143.80/259,715.70 = 84,570.30/x
  3. Step 3: Cross multiply
    173,143.80x = 259,715.70 × 84,570.30
  4. Step 4: Simplify right side
    173,143.80x = 21,964,234,663.71
  5. Step 5: Solve for x
    x = 21,964,234,663.71/173,143.80
  6. Step 6: Final answer
    x = 126,855.45

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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.