Home / 111,732.48-154,185.12-61,421.76

Finding the Fourth Proportional to 111,732.48, 154,185.12 and 61,421.76

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Solution

The fourth proportional to 111,732.48, 154,185.12 and 61,421.76 is: 84,758.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,732.48 : 154,185.12 = 61,421.76 : x
  2. Step 2: Convert to fraction form
    111,732.48/154,185.12 = 61,421.76/x
  3. Step 3: Cross multiply
    111,732.48x = 154,185.12 × 61,421.76
  4. Step 4: Simplify right side
    111,732.48x = 9,470,321,436.21
  5. Step 5: Solve for x
    x = 9,470,321,436.21/111,732.48
  6. Step 6: Final answer
    x = 84,758.89

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1.5x scale

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.