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Finding the Fourth Proportional to 173,386.40, 260,079.60 and 120,855.20

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Solution

The fourth proportional to 173,386.40, 260,079.60 and 120,855.20 is: 181,282.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,386.40 : 260,079.60 = 120,855.20 : x
  2. Step 2: Convert to fraction form
    173,386.40/260,079.60 = 120,855.20/x
  3. Step 3: Cross multiply
    173,386.40x = 260,079.60 × 120,855.20
  4. Step 4: Simplify right side
    173,386.40x = 31,431,972,073.92
  5. Step 5: Solve for x
    x = 31,431,972,073.92/173,386.40
  6. Step 6: Final answer
    x = 181,282.80

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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.