Home / 154,835.46-213,622.47-90,290.07

Finding the Fourth Proportional to 154,835.46, 213,622.47 and 90,290.07

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Solution

The fourth proportional to 154,835.46, 213,622.47 and 90,290.07 is: 124,570.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,835.46 : 213,622.47 = 90,290.07 : x
  2. Step 2: Convert to fraction form
    154,835.46/213,622.47 = 90,290.07/x
  3. Step 3: Cross multiply
    154,835.46x = 213,622.47 × 90,290.07
  4. Step 4: Simplify right side
    154,835.46x = 19,287,987,769.87
  5. Step 5: Solve for x
    x = 19,287,987,769.87/154,835.46
  6. Step 6: Final answer
    x = 124,570.87

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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.