Home / 155,981.32-215,253.72-84,361.32

Finding the Fourth Proportional to 155,981.32, 215,253.72 and 84,361.32

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Solution

The fourth proportional to 155,981.32, 215,253.72 and 84,361.32 is: 116,418.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,981.32 : 215,253.72 = 84,361.32 : x
  2. Step 2: Convert to fraction form
    155,981.32/215,253.72 = 84,361.32/x
  3. Step 3: Cross multiply
    155,981.32x = 215,253.72 × 84,361.32
  4. Step 4: Simplify right side
    155,981.32x = 18,159,087,954.11
  5. Step 5: Solve for x
    x = 18,159,087,954.11/155,981.32
  6. Step 6: Final answer
    x = 116,418.35

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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.