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Finding the Fourth Proportional to 153,381.65, 211,664.66 and 88,859.67

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Solution

The fourth proportional to 153,381.65, 211,664.66 and 88,859.67 is: 122,625.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,381.65 : 211,664.66 = 88,859.67 : x
  2. Step 2: Convert to fraction form
    153,381.65/211,664.66 = 88,859.67/x
  3. Step 3: Cross multiply
    153,381.65x = 211,664.66 × 88,859.67
  4. Step 4: Simplify right side
    153,381.65x = 18,808,451,393.96
  5. Step 5: Solve for x
    x = 18,808,451,393.96/153,381.65
  6. Step 6: Final answer
    x = 122,625.18

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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.