Home / 154,990.78-213,918.77-89,582.41

Finding the Fourth Proportional to 154,990.78, 213,918.77 and 89,582.41

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Solution

The fourth proportional to 154,990.78, 213,918.77 and 89,582.41 is: 123,641.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,990.78 : 213,918.77 = 89,582.41 : x
  2. Step 2: Convert to fraction form
    154,990.78/213,918.77 = 89,582.41/x
  3. Step 3: Cross multiply
    154,990.78x = 213,918.77 × 89,582.41
  4. Step 4: Simplify right side
    154,990.78x = 19,163,358,248.90
  5. Step 5: Solve for x
    x = 19,163,358,248.90/154,990.78
  6. Step 6: Final answer
    x = 123,641.92

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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.