Home / 103,948.41-155,170.69-91,337.09

Finding the Fourth Proportional to 103,948.41, 155,170.69 and 91,337.09

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Solution

The fourth proportional to 103,948.41, 155,170.69 and 91,337.09 is: 136,344.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,948.41 : 155,170.69 = 91,337.09 : x
  2. Step 2: Convert to fraction form
    103,948.41/155,170.69 = 91,337.09/x
  3. Step 3: Cross multiply
    103,948.41x = 155,170.69 × 91,337.09
  4. Step 4: Simplify right side
    103,948.41x = 14,172,839,582.95
  5. Step 5: Solve for x
    x = 14,172,839,582.95/103,948.41
  6. Step 6: Final answer
    x = 136,344.93

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.