Home / 136,646.39-188,572.35-76,220.95

Finding the Fourth Proportional to 136,646.39, 188,572.35 and 76,220.95

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Solution

The fourth proportional to 136,646.39, 188,572.35 and 76,220.95 is: 105,185.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,646.39 : 188,572.35 = 76,220.95 : x
  2. Step 2: Convert to fraction form
    136,646.39/188,572.35 = 76,220.95/x
  3. Step 3: Cross multiply
    136,646.39x = 188,572.35 × 76,220.95
  4. Step 4: Simplify right side
    136,646.39x = 14,373,163,828.70
  5. Step 5: Solve for x
    x = 14,373,163,828.70/136,646.39
  6. Step 6: Final answer
    x = 105,185.10

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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.