Home / 154,330.05-212,983.76-86,342.97

Finding the Fourth Proportional to 154,330.05, 212,983.76 and 86,342.97

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Solution

The fourth proportional to 154,330.05, 212,983.76 and 86,342.97 is: 119,157.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,330.05 : 212,983.76 = 86,342.97 : x
  2. Step 2: Convert to fraction form
    154,330.05/212,983.76 = 86,342.97/x
  3. Step 3: Cross multiply
    154,330.05x = 212,983.76 × 86,342.97
  4. Step 4: Simplify right side
    154,330.05x = 18,389,649,968.45
  5. Step 5: Solve for x
    x = 18,389,649,968.45/154,330.05
  6. Step 6: Final answer
    x = 119,157.93

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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.