Home / 103,659.13-155,488.65-28,779.27

Finding the Fourth Proportional to 103,659.13, 155,488.65 and 28,779.27

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Solution

The fourth proportional to 103,659.13, 155,488.65 and 28,779.27 is: 43,168.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,659.13 : 155,488.65 = 28,779.27 : x
  2. Step 2: Convert to fraction form
    103,659.13/155,488.65 = 28,779.27/x
  3. Step 3: Cross multiply
    103,659.13x = 155,488.65 × 28,779.27
  4. Step 4: Simplify right side
    103,659.13x = 4,474,849,840.29
  5. Step 5: Solve for x
    x = 4,474,849,840.29/103,659.13
  6. Step 6: Final answer
    x = 43,168.89

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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.