Home / 123,531.40-185,297.10-111,721.60

Finding the Fourth Proportional to 123,531.40, 185,297.10 and 111,721.60

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Solution

The fourth proportional to 123,531.40, 185,297.10 and 111,721.60 is: 167,582.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,531.40 : 185,297.10 = 111,721.60 : x
  2. Step 2: Convert to fraction form
    123,531.40/185,297.10 = 111,721.60/x
  3. Step 3: Cross multiply
    123,531.40x = 185,297.10 × 111,721.60
  4. Step 4: Simplify right side
    123,531.40x = 20,701,688,487.36
  5. Step 5: Solve for x
    x = 20,701,688,487.36/123,531.40
  6. Step 6: Final answer
    x = 167,582.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.