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Finding the Fourth Proportional to 154,032.88, 212,563.02 and 86,050.84

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Solution

The fourth proportional to 154,032.88, 212,563.02 and 86,050.84 is: 118,748.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,032.88 : 212,563.02 = 86,050.84 : x
  2. Step 2: Convert to fraction form
    154,032.88/212,563.02 = 86,050.84/x
  3. Step 3: Cross multiply
    154,032.88x = 212,563.02 × 86,050.84
  4. Step 4: Simplify right side
    154,032.88x = 18,291,226,423.94
  5. Step 5: Solve for x
    x = 18,291,226,423.94/154,032.88
  6. Step 6: Final answer
    x = 118,748.84

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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.