Home / 106,721.74-147,281.66-61,406.60

Finding the Fourth Proportional to 106,721.74, 147,281.66 and 61,406.60

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Solution

The fourth proportional to 106,721.74, 147,281.66 and 61,406.60 is: 84,744.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,721.74 : 147,281.66 = 61,406.60 : x
  2. Step 2: Convert to fraction form
    106,721.74/147,281.66 = 61,406.60/x
  3. Step 3: Cross multiply
    106,721.74x = 147,281.66 × 61,406.60
  4. Step 4: Simplify right side
    106,721.74x = 9,044,065,982.96
  5. Step 5: Solve for x
    x = 9,044,065,982.96/106,721.74
  6. Step 6: Final answer
    x = 84,744.37

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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.