Home / 136,543.78-188,411.81-76,107.26

Finding the Fourth Proportional to 136,543.78, 188,411.81 and 76,107.26

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Solution

The fourth proportional to 136,543.78, 188,411.81 and 76,107.26 is: 105,017.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,543.78 : 188,411.81 = 76,107.26 : x
  2. Step 2: Convert to fraction form
    136,543.78/188,411.81 = 76,107.26/x
  3. Step 3: Cross multiply
    136,543.78x = 188,411.81 × 76,107.26
  4. Step 4: Simplify right side
    136,543.78x = 14,339,506,610.74
  5. Step 5: Solve for x
    x = 14,339,506,610.74/136,543.78
  6. Step 6: Final answer
    x = 105,017.65

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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.