Home / 154,537.80-213,237.78-90,017.64

Finding the Fourth Proportional to 154,537.80, 213,237.78 and 90,017.64

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Solution

The fourth proportional to 154,537.80, 213,237.78 and 90,017.64 is: 124,210.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,537.80 : 213,237.78 = 90,017.64 : x
  2. Step 2: Convert to fraction form
    154,537.80/213,237.78 = 90,017.64/x
  3. Step 3: Cross multiply
    154,537.80x = 213,237.78 × 90,017.64
  4. Step 4: Simplify right side
    154,537.80x = 19,195,161,714.44
  5. Step 5: Solve for x
    x = 19,195,161,714.44/154,537.80
  6. Step 6: Final answer
    x = 124,210.14

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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.