Home / 136,618.47-188,533.11-76,189.18

Finding the Fourth Proportional to 136,618.47, 188,533.11 and 76,189.18

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Solution

The fourth proportional to 136,618.47, 188,533.11 and 76,189.18 is: 105,140.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,618.47 : 188,533.11 = 76,189.18 : x
  2. Step 2: Convert to fraction form
    136,618.47/188,533.11 = 76,189.18/x
  3. Step 3: Cross multiply
    136,618.47x = 188,533.11 × 76,189.18
  4. Step 4: Simplify right side
    136,618.47x = 14,364,182,111.08
  5. Step 5: Solve for x
    x = 14,364,182,111.08/136,618.47
  6. Step 6: Final answer
    x = 105,140.85

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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.