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Finding the Fourth Proportional to 100,152.60, 149,985.90 and 53,302.20

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Solution

The fourth proportional to 100,152.60, 149,985.90 and 53,302.20 is: 79,823.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,152.60 : 149,985.90 = 53,302.20 : x
  2. Step 2: Convert to fraction form
    100,152.60/149,985.90 = 53,302.20/x
  3. Step 3: Cross multiply
    100,152.60x = 149,985.90 × 53,302.20
  4. Step 4: Simplify right side
    100,152.60x = 7,994,578,438.98
  5. Step 5: Solve for x
    x = 7,994,578,438.98/100,152.60
  6. Step 6: Final answer
    x = 79,823.97

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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.