Home / 112,531.62-155,220.48-72,181.47

Finding the Fourth Proportional to 112,531.62, 155,220.48 and 72,181.47

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Solution

The fourth proportional to 112,531.62, 155,220.48 and 72,181.47 is: 99,563.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,531.62 : 155,220.48 = 72,181.47 : x
  2. Step 2: Convert to fraction form
    112,531.62/155,220.48 = 72,181.47/x
  3. Step 3: Cross multiply
    112,531.62x = 155,220.48 × 72,181.47
  4. Step 4: Simplify right side
    112,531.62x = 11,204,042,420.51
  5. Step 5: Solve for x
    x = 11,204,042,420.51/112,531.62
  6. Step 6: Final answer
    x = 99,563.50

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1.5x scale

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.