Home / 154,421.64-213,135-94,012.20

Finding the Fourth Proportional to 154,421.64, 213,135 and 94,012.20

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Solution

The fourth proportional to 154,421.64, 213,135 and 94,012.20 is: 129,757.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,421.64 : 213,135 = 94,012.20 : x
  2. Step 2: Convert to fraction form
    154,421.64/213,135 = 94,012.20/x
  3. Step 3: Cross multiply
    154,421.64x = 213,135 × 94,012.20
  4. Step 4: Simplify right side
    154,421.64x = 20,037,290,247
  5. Step 5: Solve for x
    x = 20,037,290,247/154,421.64
  6. Step 6: Final answer
    x = 129,757.01

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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.