Home / 136,931.34-188,964.36-76,501.53

Finding the Fourth Proportional to 136,931.34, 188,964.36 and 76,501.53

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Solution

The fourth proportional to 136,931.34, 188,964.36 and 76,501.53 is: 105,571.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,931.34 : 188,964.36 = 76,501.53 : x
  2. Step 2: Convert to fraction form
    136,931.34/188,964.36 = 76,501.53/x
  3. Step 3: Cross multiply
    136,931.34x = 188,964.36 × 76,501.53
  4. Step 4: Simplify right side
    136,931.34x = 14,456,062,655.47
  5. Step 5: Solve for x
    x = 14,456,062,655.47/136,931.34
  6. Step 6: Final answer
    x = 105,571.61

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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.