Home / 136,886.52-188,901.36-76,458.18

Finding the Fourth Proportional to 136,886.52, 188,901.36 and 76,458.18

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Solution

The fourth proportional to 136,886.52, 188,901.36 and 76,458.18 is: 105,511.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,886.52 : 188,901.36 = 76,458.18 : x
  2. Step 2: Convert to fraction form
    136,886.52/188,901.36 = 76,458.18/x
  3. Step 3: Cross multiply
    136,886.52x = 188,901.36 × 76,458.18
  4. Step 4: Simplify right side
    136,886.52x = 14,443,054,185.12
  5. Step 5: Solve for x
    x = 14,443,054,185.12/136,886.52
  6. Step 6: Final answer
    x = 105,511.15

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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.