Home / 112,282.08-154,948.32-61,980

Finding the Fourth Proportional to 112,282.08, 154,948.32 and 61,980

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Solution

The fourth proportional to 112,282.08, 154,948.32 and 61,980 is: 85,531.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,282.08 : 154,948.32 = 61,980 : x
  2. Step 2: Convert to fraction form
    112,282.08/154,948.32 = 61,980/x
  3. Step 3: Cross multiply
    112,282.08x = 154,948.32 × 61,980
  4. Step 4: Simplify right side
    112,282.08x = 9,603,696,873.60
  5. Step 5: Solve for x
    x = 9,603,696,873.60/112,282.08
  6. Step 6: Final answer
    x = 85,531.88

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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.