Home / 154,807.23-213,436.21-100,263.03

Finding the Fourth Proportional to 154,807.23, 213,436.21 and 100,263.03

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Solution

The fourth proportional to 154,807.23, 213,436.21 and 100,263.03 is: 138,234.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,807.23 : 213,436.21 = 100,263.03 : x
  2. Step 2: Convert to fraction form
    154,807.23/213,436.21 = 100,263.03/x
  3. Step 3: Cross multiply
    154,807.23x = 213,436.21 × 100,263.03
  4. Step 4: Simplify right side
    154,807.23x = 21,399,761,126.32
  5. Step 5: Solve for x
    x = 21,399,761,126.32/154,807.23
  6. Step 6: Final answer
    x = 138,234.89

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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.