Home / 91,121.76-136,529.55-64,695.51

Finding the Fourth Proportional to 91,121.76, 136,529.55 and 64,695.51

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Solution

The fourth proportional to 91,121.76, 136,529.55 and 64,695.51 is: 96,934.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,121.76 : 136,529.55 = 64,695.51 : x
  2. Step 2: Convert to fraction form
    91,121.76/136,529.55 = 64,695.51/x
  3. Step 3: Cross multiply
    91,121.76x = 136,529.55 × 64,695.51
  4. Step 4: Simplify right side
    91,121.76x = 8,832,848,867.32
  5. Step 5: Solve for x
    x = 8,832,848,867.32/91,121.76
  6. Step 6: Final answer
    x = 96,934.57

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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.