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Finding the Fourth Proportional to 157,882.50, 218,054.43 and 122,501.70

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Solution

The fourth proportional to 157,882.50, 218,054.43 and 122,501.70 is: 169,189.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,882.50 : 218,054.43 = 122,501.70 : x
  2. Step 2: Convert to fraction form
    157,882.50/218,054.43 = 122,501.70/x
  3. Step 3: Cross multiply
    157,882.50x = 218,054.43 × 122,501.70
  4. Step 4: Simplify right side
    157,882.50x = 26,712,038,367.53
  5. Step 5: Solve for x
    x = 26,712,038,367.53/157,882.50
  6. Step 6: Final answer
    x = 169,189.36

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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.