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Finding the Fourth Proportional to 173,387.40, 260,081.10 and 120,856.20

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Solution

The fourth proportional to 173,387.40, 260,081.10 and 120,856.20 is: 181,284.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,387.40 : 260,081.10 = 120,856.20 : x
  2. Step 2: Convert to fraction form
    173,387.40/260,081.10 = 120,856.20/x
  3. Step 3: Cross multiply
    173,387.40x = 260,081.10 × 120,856.20
  4. Step 4: Simplify right side
    173,387.40x = 31,432,413,437.82
  5. Step 5: Solve for x
    x = 31,432,413,437.82/173,387.40
  6. Step 6: Final answer
    x = 181,284.30

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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.