Home / 154,239.84-212,849.48-86,256.04

Finding the Fourth Proportional to 154,239.84, 212,849.48 and 86,256.04

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Solution

The fourth proportional to 154,239.84, 212,849.48 and 86,256.04 is: 119,032.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,239.84 : 212,849.48 = 86,256.04 : x
  2. Step 2: Convert to fraction form
    154,239.84/212,849.48 = 86,256.04/x
  3. Step 3: Cross multiply
    154,239.84x = 212,849.48 × 86,256.04
  4. Step 4: Simplify right side
    154,239.84x = 18,359,553,260.86
  5. Step 5: Solve for x
    x = 18,359,553,260.86/154,239.84
  6. Step 6: Final answer
    x = 119,032.50

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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.