Home / 154,657.07-213,423.21-90,122.20

Finding the Fourth Proportional to 154,657.07, 213,423.21 and 90,122.20

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Solution

The fourth proportional to 154,657.07, 213,423.21 and 90,122.20 is: 124,366.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,657.07 : 213,423.21 = 90,122.20 : x
  2. Step 2: Convert to fraction form
    154,657.07/213,423.21 = 90,122.20/x
  3. Step 3: Cross multiply
    154,657.07x = 213,423.21 × 90,122.20
  4. Step 4: Simplify right side
    154,657.07x = 19,234,169,216.26
  5. Step 5: Solve for x
    x = 19,234,169,216.26/154,657.07
  6. Step 6: Final answer
    x = 124,366.57

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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.