Home / 154,451.40-213,127.32-86,463.96

Finding the Fourth Proportional to 154,451.40, 213,127.32 and 86,463.96

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Solution

The fourth proportional to 154,451.40, 213,127.32 and 86,463.96 is: 119,311.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,451.40 : 213,127.32 = 86,463.96 : x
  2. Step 2: Convert to fraction form
    154,451.40/213,127.32 = 86,463.96/x
  3. Step 3: Cross multiply
    154,451.40x = 213,127.32 × 86,463.96
  4. Step 4: Simplify right side
    154,451.40x = 18,427,832,071.39
  5. Step 5: Solve for x
    x = 18,427,832,071.39/154,451.40
  6. Step 6: Final answer
    x = 119,311.52

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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.