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Finding the Fourth Proportional to 102,858, 154,068.24 and 60,692.64

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Solution

The fourth proportional to 102,858, 154,068.24 and 60,692.64 is: 90,909.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,858 : 154,068.24 = 60,692.64 : x
  2. Step 2: Convert to fraction form
    102,858/154,068.24 = 60,692.64/x
  3. Step 3: Cross multiply
    102,858x = 154,068.24 × 60,692.64
  4. Step 4: Simplify right side
    102,858x = 9,350,808,225.75
  5. Step 5: Solve for x
    x = 9,350,808,225.75/102,858
  6. Step 6: Final answer
    x = 90,909.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.