Home / 154,427.27-213,099.75-86,432.81

Finding the Fourth Proportional to 154,427.27, 213,099.75 and 86,432.81

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Solution

The fourth proportional to 154,427.27, 213,099.75 and 86,432.81 is: 119,271.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,427.27 : 213,099.75 = 86,432.81 : x
  2. Step 2: Convert to fraction form
    154,427.27/213,099.75 = 86,432.81/x
  3. Step 3: Cross multiply
    154,427.27x = 213,099.75 × 86,432.81
  4. Step 4: Simplify right side
    154,427.27x = 18,418,809,137.30
  5. Step 5: Solve for x
    x = 18,418,809,137.30/154,427.27
  6. Step 6: Final answer
    x = 119,271.74

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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.