Home / 155,705.64-214,873.78-84,085.66

Finding the Fourth Proportional to 155,705.64, 214,873.78 and 84,085.66

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Solution

The fourth proportional to 155,705.64, 214,873.78 and 84,085.66 is: 116,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,705.64 : 214,873.78 = 84,085.66 : x
  2. Step 2: Convert to fraction form
    155,705.64/214,873.78 = 84,085.66/x
  3. Step 3: Cross multiply
    155,705.64x = 214,873.78 × 84,085.66
  4. Step 4: Simplify right side
    155,705.64x = 18,067,803,607.99
  5. Step 5: Solve for x
    x = 18,067,803,607.99/155,705.64
  6. Step 6: Final answer
    x = 116,038.21

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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.