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Finding the Fourth Proportional to 97,900.87, 146,900.09 and 38,779.15

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Solution

The fourth proportional to 97,900.87, 146,900.09 and 38,779.15 is: 58,188.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,900.87 : 146,900.09 = 38,779.15 : x
  2. Step 2: Convert to fraction form
    97,900.87/146,900.09 = 38,779.15/x
  3. Step 3: Cross multiply
    97,900.87x = 146,900.09 × 38,779.15
  4. Step 4: Simplify right side
    97,900.87x = 5,696,660,625.12
  5. Step 5: Solve for x
    x = 5,696,660,625.12/97,900.87
  6. Step 6: Final answer
    x = 58,188.05

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1.5x scale

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.