Home / 130,188.72-195,281.64-31,692.72

Finding the Fourth Proportional to 130,188.72, 195,281.64 and 31,692.72

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Solution

The fourth proportional to 130,188.72, 195,281.64 and 31,692.72 is: 47,538.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,188.72 : 195,281.64 = 31,692.72 : x
  2. Step 2: Convert to fraction form
    130,188.72/195,281.64 = 31,692.72/x
  3. Step 3: Cross multiply
    130,188.72x = 195,281.64 × 31,692.72
  4. Step 4: Simplify right side
    130,188.72x = 6,189,006,337.66
  5. Step 5: Solve for x
    x = 6,189,006,337.66/130,188.72
  6. Step 6: Final answer
    x = 47,538.73

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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.