Home / 124,904.39-172,361.72-77,161.91

Finding the Fourth Proportional to 124,904.39, 172,361.72 and 77,161.91

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Solution

The fourth proportional to 124,904.39, 172,361.72 and 77,161.91 is: 106,479.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,904.39 : 172,361.72 = 77,161.91 : x
  2. Step 2: Convert to fraction form
    124,904.39/172,361.72 = 77,161.91/x
  3. Step 3: Cross multiply
    124,904.39x = 172,361.72 × 77,161.91
  4. Step 4: Simplify right side
    124,904.39x = 13,299,758,857.18
  5. Step 5: Solve for x
    x = 13,299,758,857.18/124,904.39
  6. Step 6: Final answer
    x = 106,479.52

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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.