Home / 154,330.74-212,986.98-86,354.16

Finding the Fourth Proportional to 154,330.74, 212,986.98 and 86,354.16

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Solution

The fourth proportional to 154,330.74, 212,986.98 and 86,354.16 is: 119,174.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,330.74 : 212,986.98 = 86,354.16 : x
  2. Step 2: Convert to fraction form
    154,330.74/212,986.98 = 86,354.16/x
  3. Step 3: Cross multiply
    154,330.74x = 212,986.98 × 86,354.16
  4. Step 4: Simplify right side
    154,330.74x = 18,392,311,748.84
  5. Step 5: Solve for x
    x = 18,392,311,748.84/154,330.74
  6. Step 6: Final answer
    x = 119,174.65

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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.