Home / 136,905.51-188,925.23-79,549.62

Finding the Fourth Proportional to 136,905.51, 188,925.23 and 79,549.62

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Solution

The fourth proportional to 136,905.51, 188,925.23 and 79,549.62 is: 109,775.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,905.51 : 188,925.23 = 79,549.62 : x
  2. Step 2: Convert to fraction form
    136,905.51/188,925.23 = 79,549.62/x
  3. Step 3: Cross multiply
    136,905.51x = 188,925.23 × 79,549.62
  4. Step 4: Simplify right side
    136,905.51x = 15,028,929,857.16
  5. Step 5: Solve for x
    x = 15,028,929,857.16/136,905.51
  6. Step 6: Final answer
    x = 109,775.93

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1.5x scale

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.