Home / 154,729.46-213,541.79-86,746.57

Finding the Fourth Proportional to 154,729.46, 213,541.79 and 86,746.57

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Solution

The fourth proportional to 154,729.46, 213,541.79 and 86,746.57 is: 119,718.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,729.46 : 213,541.79 = 86,746.57 : x
  2. Step 2: Convert to fraction form
    154,729.46/213,541.79 = 86,746.57/x
  3. Step 3: Cross multiply
    154,729.46x = 213,541.79 × 86,746.57
  4. Step 4: Simplify right side
    154,729.46x = 18,524,016,866.57
  5. Step 5: Solve for x
    x = 18,524,016,866.57/154,729.46
  6. Step 6: Final answer
    x = 119,718.74

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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.