Home / 136,888.23-188,903.77-76,459.73

Finding the Fourth Proportional to 136,888.23, 188,903.77 and 76,459.73

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Solution

The fourth proportional to 136,888.23, 188,903.77 and 76,459.73 is: 105,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,888.23 : 188,903.77 = 76,459.73 : x
  2. Step 2: Convert to fraction form
    136,888.23/188,903.77 = 76,459.73/x
  3. Step 3: Cross multiply
    136,888.23x = 188,903.77 × 76,459.73
  4. Step 4: Simplify right side
    136,888.23x = 14,443,531,531.29
  5. Step 5: Solve for x
    x = 14,443,531,531.29/136,888.23
  6. Step 6: Final answer
    x = 105,513.32

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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.