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Finding the Fourth Proportional to 173,772.30, 260,658.45 and 138,780.30

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Solution

The fourth proportional to 173,772.30, 260,658.45 and 138,780.30 is: 208,170.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,772.30 : 260,658.45 = 138,780.30 : x
  2. Step 2: Convert to fraction form
    173,772.30/260,658.45 = 138,780.30/x
  3. Step 3: Cross multiply
    173,772.30x = 260,658.45 × 138,780.30
  4. Step 4: Simplify right side
    173,772.30x = 36,174,257,888.54
  5. Step 5: Solve for x
    x = 36,174,257,888.54/173,772.30
  6. Step 6: Final answer
    x = 208,170.45

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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.