Home / 102,698.51-141,721.33-57,376.83

Finding the Fourth Proportional to 102,698.51, 141,721.33 and 57,376.83

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Solution

The fourth proportional to 102,698.51, 141,721.33 and 57,376.83 is: 79,178.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,698.51 : 141,721.33 = 57,376.83 : x
  2. Step 2: Convert to fraction form
    102,698.51/141,721.33 = 57,376.83/x
  3. Step 3: Cross multiply
    102,698.51x = 141,721.33 × 57,376.83
  4. Step 4: Simplify right side
    102,698.51x = 8,131,521,156.53
  5. Step 5: Solve for x
    x = 8,131,521,156.53/102,698.51
  6. Step 6: Final answer
    x = 79,178.57

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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.