Home / 112,867.32-155,754.64-61,880.16

Finding the Fourth Proportional to 112,867.32, 155,754.64 and 61,880.16

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Solution

The fourth proportional to 112,867.32, 155,754.64 and 61,880.16 is: 85,393.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,867.32 : 155,754.64 = 61,880.16 : x
  2. Step 2: Convert to fraction form
    112,867.32/155,754.64 = 61,880.16/x
  3. Step 3: Cross multiply
    112,867.32x = 155,754.64 × 61,880.16
  4. Step 4: Simplify right side
    112,867.32x = 9,638,122,043.94
  5. Step 5: Solve for x
    x = 9,638,122,043.94/112,867.32
  6. Step 6: Final answer
    x = 85,393.38

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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.