Home / 112,851.40-155,664.12-72,617.44

Finding the Fourth Proportional to 112,851.40, 155,664.12 and 72,617.44

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Solution

The fourth proportional to 112,851.40, 155,664.12 and 72,617.44 is: 100,166.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,851.40 : 155,664.12 = 72,617.44 : x
  2. Step 2: Convert to fraction form
    112,851.40/155,664.12 = 72,617.44/x
  3. Step 3: Cross multiply
    112,851.40x = 155,664.12 × 72,617.44
  4. Step 4: Simplify right side
    112,851.40x = 11,303,929,894.25
  5. Step 5: Solve for x
    x = 11,303,929,894.25/112,851.40
  6. Step 6: Final answer
    x = 100,166.50

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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.