Home / 153,994.46-212,507.97-86,009.43

Finding the Fourth Proportional to 153,994.46, 212,507.97 and 86,009.43

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Solution

The fourth proportional to 153,994.46, 212,507.97 and 86,009.43 is: 118,690.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,994.46 : 212,507.97 = 86,009.43 : x
  2. Step 2: Convert to fraction form
    153,994.46/212,507.97 = 86,009.43/x
  3. Step 3: Cross multiply
    153,994.46x = 212,507.97 × 86,009.43
  4. Step 4: Simplify right side
    153,994.46x = 18,277,689,471.38
  5. Step 5: Solve for x
    x = 18,277,689,471.38/153,994.46
  6. Step 6: Final answer
    x = 118,690.57

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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.