Home / 154,657.32-213,423.54-90,122.45

Finding the Fourth Proportional to 154,657.32, 213,423.54 and 90,122.45

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Solution

The fourth proportional to 154,657.32, 213,423.54 and 90,122.45 is: 124,366.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,657.32 : 213,423.54 = 90,122.45 : x
  2. Step 2: Convert to fraction form
    154,657.32/213,423.54 = 90,122.45/x
  3. Step 3: Cross multiply
    154,657.32x = 213,423.54 × 90,122.45
  4. Step 4: Simplify right side
    154,657.32x = 19,234,251,245.36
  5. Step 5: Solve for x
    x = 19,234,251,245.36/154,657.32
  6. Step 6: Final answer
    x = 124,366.90

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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.