Home / 131,116.20-180,893.70-77,374.32

Finding the Fourth Proportional to 131,116.20, 180,893.70 and 77,374.32

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Solution

The fourth proportional to 131,116.20, 180,893.70 and 77,374.32 is: 106,749.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,116.20 : 180,893.70 = 77,374.32 : x
  2. Step 2: Convert to fraction form
    131,116.20/180,893.70 = 77,374.32/x
  3. Step 3: Cross multiply
    131,116.20x = 180,893.70 × 77,374.32
  4. Step 4: Simplify right side
    131,116.20x = 13,996,527,029.78
  5. Step 5: Solve for x
    x = 13,996,527,029.78/131,116.20
  6. Step 6: Final answer
    x = 106,749.03

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1.5x scale

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.