Home / 109,529.18-151,143.96-61,779.68

Finding the Fourth Proportional to 109,529.18, 151,143.96 and 61,779.68

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Solution

The fourth proportional to 109,529.18, 151,143.96 and 61,779.68 is: 85,252.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,529.18 : 151,143.96 = 61,779.68 : x
  2. Step 2: Convert to fraction form
    109,529.18/151,143.96 = 61,779.68/x
  3. Step 3: Cross multiply
    109,529.18x = 151,143.96 × 61,779.68
  4. Step 4: Simplify right side
    109,529.18x = 9,337,625,482.73
  5. Step 5: Solve for x
    x = 9,337,625,482.73/109,529.18
  6. Step 6: Final answer
    x = 85,252.40

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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.