Home / 154,621.31-213,340.43-90,051.35

Finding the Fourth Proportional to 154,621.31, 213,340.43 and 90,051.35

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Solution

The fourth proportional to 154,621.31, 213,340.43 and 90,051.35 is: 124,249.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,621.31 : 213,340.43 = 90,051.35 : x
  2. Step 2: Convert to fraction form
    154,621.31/213,340.43 = 90,051.35/x
  3. Step 3: Cross multiply
    154,621.31x = 213,340.43 × 90,051.35
  4. Step 4: Simplify right side
    154,621.31x = 19,211,592,889.51
  5. Step 5: Solve for x
    x = 19,211,592,889.51/154,621.31
  6. Step 6: Final answer
    x = 124,249.33

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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.