Home / 112,884.94-155,664.93-78,881.04

Finding the Fourth Proportional to 112,884.94, 155,664.93 and 78,881.04

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Solution

The fourth proportional to 112,884.94, 155,664.93 and 78,881.04 is: 108,774.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,884.94 : 155,664.93 = 78,881.04 : x
  2. Step 2: Convert to fraction form
    112,884.94/155,664.93 = 78,881.04/x
  3. Step 3: Cross multiply
    112,884.94x = 155,664.93 × 78,881.04
  4. Step 4: Simplify right side
    112,884.94x = 12,279,011,569.93
  5. Step 5: Solve for x
    x = 12,279,011,569.93/112,884.94
  6. Step 6: Final answer
    x = 108,774.58

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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.