Home / 154,154.24-212,728.36-86,171.36

Finding the Fourth Proportional to 154,154.24, 212,728.36 and 86,171.36

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Solution

The fourth proportional to 154,154.24, 212,728.36 and 86,171.36 is: 118,913.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,154.24 : 212,728.36 = 86,171.36 : x
  2. Step 2: Convert to fraction form
    154,154.24/212,728.36 = 86,171.36/x
  3. Step 3: Cross multiply
    154,154.24x = 212,728.36 × 86,171.36
  4. Step 4: Simplify right side
    154,154.24x = 18,331,092,091.77
  5. Step 5: Solve for x
    x = 18,331,092,091.77/154,154.24
  6. Step 6: Final answer
    x = 118,913.97

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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.