Home / 136,341.05-188,243.01-85,374.23

Finding the Fourth Proportional to 136,341.05, 188,243.01 and 85,374.23

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Solution

The fourth proportional to 136,341.05, 188,243.01 and 85,374.23 is: 117,874.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,341.05 : 188,243.01 = 85,374.23 : x
  2. Step 2: Convert to fraction form
    136,341.05/188,243.01 = 85,374.23/x
  3. Step 3: Cross multiply
    136,341.05x = 188,243.01 × 85,374.23
  4. Step 4: Simplify right side
    136,341.05x = 16,071,101,090.42
  5. Step 5: Solve for x
    x = 16,071,101,090.42/136,341.05
  6. Step 6: Final answer
    x = 117,874.27

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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.