Home / 109,108.79-150,569.15-61,361.12

Finding the Fourth Proportional to 109,108.79, 150,569.15 and 61,361.12

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Solution

The fourth proportional to 109,108.79, 150,569.15 and 61,361.12 is: 84,677.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,108.79 : 150,569.15 = 61,361.12 : x
  2. Step 2: Convert to fraction form
    109,108.79/150,569.15 = 61,361.12/x
  3. Step 3: Cross multiply
    109,108.79x = 150,569.15 × 61,361.12
  4. Step 4: Simplify right side
    109,108.79x = 9,239,090,621.80
  5. Step 5: Solve for x
    x = 9,239,090,621.80/109,108.79
  6. Step 6: Final answer
    x = 84,677.78

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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.