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Finding the Fourth Proportional to 125,800, 173,604 and 69,210.16

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Solution

The fourth proportional to 125,800, 173,604 and 69,210.16 is: 95,510.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,800 : 173,604 = 69,210.16 : x
  2. Step 2: Convert to fraction form
    125,800/173,604 = 69,210.16/x
  3. Step 3: Cross multiply
    125,800x = 173,604 × 69,210.16
  4. Step 4: Simplify right side
    125,800x = 12,015,160,616.64
  5. Step 5: Solve for x
    x = 12,015,160,616.64/125,800
  6. Step 6: Final answer
    x = 95,510.02

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.