Home / 88,129.40-131,999.70-53,007.80

Finding the Fourth Proportional to 88,129.40, 131,999.70 and 53,007.80

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Solution

The fourth proportional to 88,129.40, 131,999.70 and 53,007.80 is: 79,394.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,129.40 : 131,999.70 = 53,007.80 : x
  2. Step 2: Convert to fraction form
    88,129.40/131,999.70 = 53,007.80/x
  3. Step 3: Cross multiply
    88,129.40x = 131,999.70 × 53,007.80
  4. Step 4: Simplify right side
    88,129.40x = 6,997,013,697.66
  5. Step 5: Solve for x
    x = 6,997,013,697.66/88,129.40
  6. Step 6: Final answer
    x = 79,394.77

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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.