Home / 154,471.44-213,121.02-86,478.40

Finding the Fourth Proportional to 154,471.44, 213,121.02 and 86,478.40

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Solution

The fourth proportional to 154,471.44, 213,121.02 and 86,478.40 is: 119,312.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,471.44 : 213,121.02 = 86,478.40 : x
  2. Step 2: Convert to fraction form
    154,471.44/213,121.02 = 86,478.40/x
  3. Step 3: Cross multiply
    154,471.44x = 213,121.02 × 86,478.40
  4. Step 4: Simplify right side
    154,471.44x = 18,430,364,815.97
  5. Step 5: Solve for x
    x = 18,430,364,815.97/154,471.44
  6. Step 6: Final answer
    x = 119,312.44

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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.