Home / 117,782.46-162,631.04-90,515.36

Finding the Fourth Proportional to 117,782.46, 162,631.04 and 90,515.36

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Solution

The fourth proportional to 117,782.46, 162,631.04 and 90,515.36 is: 124,981.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,782.46 : 162,631.04 = 90,515.36 : x
  2. Step 2: Convert to fraction form
    117,782.46/162,631.04 = 90,515.36/x
  3. Step 3: Cross multiply
    117,782.46x = 162,631.04 × 90,515.36
  4. Step 4: Simplify right side
    117,782.46x = 14,720,605,867.04
  5. Step 5: Solve for x
    x = 14,720,605,867.04/117,782.46
  6. Step 6: Final answer
    x = 124,981.31

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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.