Home / 154,659.08-213,425.96-90,124.20

Finding the Fourth Proportional to 154,659.08, 213,425.96 and 90,124.20

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Solution

The fourth proportional to 154,659.08, 213,425.96 and 90,124.20 is: 124,369.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,659.08 : 213,425.96 = 90,124.20 : x
  2. Step 2: Convert to fraction form
    154,659.08/213,425.96 = 90,124.20/x
  3. Step 3: Cross multiply
    154,659.08x = 213,425.96 × 90,124.20
  4. Step 4: Simplify right side
    154,659.08x = 19,234,843,904.23
  5. Step 5: Solve for x
    x = 19,234,843,904.23/154,659.08
  6. Step 6: Final answer
    x = 124,369.32

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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.