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Finding the Fourth Proportional to 173,405.40, 260,108.10 and 84,831.90

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Solution

The fourth proportional to 173,405.40, 260,108.10 and 84,831.90 is: 127,247.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,405.40 : 260,108.10 = 84,831.90 : x
  2. Step 2: Convert to fraction form
    173,405.40/260,108.10 = 84,831.90/x
  3. Step 3: Cross multiply
    173,405.40x = 260,108.10 × 84,831.90
  4. Step 4: Simplify right side
    173,405.40x = 22,065,464,328.39
  5. Step 5: Solve for x
    x = 22,065,464,328.39/173,405.40
  6. Step 6: Final answer
    x = 127,247.85

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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.