Home / 157,981.34-218,015.70-89,997.31

Finding the Fourth Proportional to 157,981.34, 218,015.70 and 89,997.31

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Solution

The fourth proportional to 157,981.34, 218,015.70 and 89,997.31 is: 124,197.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,981.34 : 218,015.70 = 89,997.31 : x
  2. Step 2: Convert to fraction form
    157,981.34/218,015.70 = 89,997.31/x
  3. Step 3: Cross multiply
    157,981.34x = 218,015.70 × 89,997.31
  4. Step 4: Simplify right side
    157,981.34x = 19,620,826,537.77
  5. Step 5: Solve for x
    x = 19,620,826,537.77/157,981.34
  6. Step 6: Final answer
    x = 124,197.11

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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.