Home / 136,920.08-188,931.06-76,483.04

Finding the Fourth Proportional to 136,920.08, 188,931.06 and 76,483.04

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Solution

The fourth proportional to 136,920.08, 188,931.06 and 76,483.04 is: 105,536.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,920.08 : 188,931.06 = 76,483.04 : x
  2. Step 2: Convert to fraction form
    136,920.08/188,931.06 = 76,483.04/x
  3. Step 3: Cross multiply
    136,920.08x = 188,931.06 × 76,483.04
  4. Step 4: Simplify right side
    136,920.08x = 14,450,021,819.22
  5. Step 5: Solve for x
    x = 14,450,021,819.22/136,920.08
  6. Step 6: Final answer
    x = 105,536.18

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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.