Home / 155,981.50-215,254.59-84,361.43

Finding the Fourth Proportional to 155,981.50, 215,254.59 and 84,361.43

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Solution

The fourth proportional to 155,981.50, 215,254.59 and 84,361.43 is: 116,418.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,981.50 : 215,254.59 = 84,361.43 : x
  2. Step 2: Convert to fraction form
    155,981.50/215,254.59 = 84,361.43/x
  3. Step 3: Cross multiply
    155,981.50x = 215,254.59 × 84,361.43
  4. Step 4: Simplify right side
    155,981.50x = 18,159,185,026.46
  5. Step 5: Solve for x
    x = 18,159,185,026.46/155,981.50
  6. Step 6: Final answer
    x = 116,418.84

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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.