Home / 117,553.12-176,145.36-81,979.36

Finding the Fourth Proportional to 117,553.12, 176,145.36 and 81,979.36

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Solution

The fourth proportional to 117,553.12, 176,145.36 and 81,979.36 is: 122,840.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,553.12 : 176,145.36 = 81,979.36 : x
  2. Step 2: Convert to fraction form
    117,553.12/176,145.36 = 81,979.36/x
  3. Step 3: Cross multiply
    117,553.12x = 176,145.36 × 81,979.36
  4. Step 4: Simplify right side
    117,553.12x = 14,440,283,879.77
  5. Step 5: Solve for x
    x = 14,440,283,879.77/117,553.12
  6. Step 6: Final answer
    x = 122,840.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.