Home / 158,981.12-219,395.69-87,361.16

Finding the Fourth Proportional to 158,981.12, 219,395.69 and 87,361.16

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Solution

The fourth proportional to 158,981.12, 219,395.69 and 87,361.16 is: 120,559.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,981.12 : 219,395.69 = 87,361.16 : x
  2. Step 2: Convert to fraction form
    158,981.12/219,395.69 = 87,361.16/x
  3. Step 3: Cross multiply
    158,981.12x = 219,395.69 × 87,361.16
  4. Step 4: Simplify right side
    158,981.12x = 19,166,660,443.62
  5. Step 5: Solve for x
    x = 19,166,660,443.62/158,981.12
  6. Step 6: Final answer
    x = 120,559.35

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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.