Home / 117,731.16-162,529.20-90,813.24

Finding the Fourth Proportional to 117,731.16, 162,529.20 and 90,813.24

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Solution

The fourth proportional to 117,731.16, 162,529.20 and 90,813.24 is: 125,368.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,731.16 : 162,529.20 = 90,813.24 : x
  2. Step 2: Convert to fraction form
    117,731.16/162,529.20 = 90,813.24/x
  3. Step 3: Cross multiply
    117,731.16x = 162,529.20 × 90,813.24
  4. Step 4: Simplify right side
    117,731.16x = 14,759,803,246.61
  5. Step 5: Solve for x
    x = 14,759,803,246.61/117,731.16
  6. Step 6: Final answer
    x = 125,368.71

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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.