Home / 112,408.36-155,118.88-61,422.81

Finding the Fourth Proportional to 112,408.36, 155,118.88 and 61,422.81

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Solution

The fourth proportional to 112,408.36, 155,118.88 and 61,422.81 is: 84,760.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,408.36 : 155,118.88 = 61,422.81 : x
  2. Step 2: Convert to fraction form
    112,408.36/155,118.88 = 61,422.81/x
  3. Step 3: Cross multiply
    112,408.36x = 155,118.88 × 61,422.81
  4. Step 4: Simplify right side
    112,408.36x = 9,527,836,988.74
  5. Step 5: Solve for x
    x = 9,527,836,988.74/112,408.36
  6. Step 6: Final answer
    x = 84,760.93

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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.