Home / 136,948.42-188,989.76-76,521.61

Finding the Fourth Proportional to 136,948.42, 188,989.76 and 76,521.61

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Solution

The fourth proportional to 136,948.42, 188,989.76 and 76,521.61 is: 105,600.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,948.42 : 188,989.76 = 76,521.61 : x
  2. Step 2: Convert to fraction form
    136,948.42/188,989.76 = 76,521.61/x
  3. Step 3: Cross multiply
    136,948.42x = 188,989.76 × 76,521.61
  4. Step 4: Simplify right side
    136,948.42x = 14,461,800,705.82
  5. Step 5: Solve for x
    x = 14,461,800,705.82/136,948.42
  6. Step 6: Final answer
    x = 105,600.35

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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.