Home / 154,422.45-213,092.64-86,427.81

Finding the Fourth Proportional to 154,422.45, 213,092.64 and 86,427.81

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Solution

The fourth proportional to 154,422.45, 213,092.64 and 86,427.81 is: 119,264.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,422.45 : 213,092.64 = 86,427.81 : x
  2. Step 2: Convert to fraction form
    154,422.45/213,092.64 = 86,427.81/x
  3. Step 3: Cross multiply
    154,422.45x = 213,092.64 × 86,427.81
  4. Step 4: Simplify right side
    154,422.45x = 18,417,130,202.32
  5. Step 5: Solve for x
    x = 18,417,130,202.32/154,422.45
  6. Step 6: Final answer
    x = 119,264.59

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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.