Home / 154,617.84-213,395.22-86,639.40

Finding the Fourth Proportional to 154,617.84, 213,395.22 and 86,639.40

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Solution

The fourth proportional to 154,617.84, 213,395.22 and 86,639.40 is: 119,575.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,617.84 : 213,395.22 = 86,639.40 : x
  2. Step 2: Convert to fraction form
    154,617.84/213,395.22 = 86,639.40/x
  3. Step 3: Cross multiply
    154,617.84x = 213,395.22 × 86,639.40
  4. Step 4: Simplify right side
    154,617.84x = 18,488,433,823.67
  5. Step 5: Solve for x
    x = 18,488,433,823.67/154,617.84
  6. Step 6: Final answer
    x = 119,575.04

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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.