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Finding the Fourth Proportional to 125,742.29, 173,520.90 and 69,153.67

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Solution

The fourth proportional to 125,742.29, 173,520.90 and 69,153.67 is: 95,430.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,742.29 : 173,520.90 = 69,153.67 : x
  2. Step 2: Convert to fraction form
    125,742.29/173,520.90 = 69,153.67/x
  3. Step 3: Cross multiply
    125,742.29x = 173,520.90 × 69,153.67
  4. Step 4: Simplify right side
    125,742.29x = 11,999,607,056.70
  5. Step 5: Solve for x
    x = 11,999,607,056.70/125,742.29
  6. Step 6: Final answer
    x = 95,430.16

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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.