Home / 112,165.78-154,788.06-61,864.78

Finding the Fourth Proportional to 112,165.78, 154,788.06 and 61,864.78

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Solution

The fourth proportional to 112,165.78, 154,788.06 and 61,864.78 is: 85,373.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,165.78 : 154,788.06 = 61,864.78 : x
  2. Step 2: Convert to fraction form
    112,165.78/154,788.06 = 61,864.78/x
  3. Step 3: Cross multiply
    112,165.78x = 154,788.06 × 61,864.78
  4. Step 4: Simplify right side
    112,165.78x = 9,575,929,278.53
  5. Step 5: Solve for x
    x = 9,575,929,278.53/112,165.78
  6. Step 6: Final answer
    x = 85,373.00

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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.