Home / 105,182.60-157,657.04-80,140.09

Finding the Fourth Proportional to 105,182.60, 157,657.04 and 80,140.09

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Solution

The fourth proportional to 105,182.60, 157,657.04 and 80,140.09 is: 120,121.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,182.60 : 157,657.04 = 80,140.09 : x
  2. Step 2: Convert to fraction form
    105,182.60/157,657.04 = 80,140.09/x
  3. Step 3: Cross multiply
    105,182.60x = 157,657.04 × 80,140.09
  4. Step 4: Simplify right side
    105,182.60x = 12,634,648,579.89
  5. Step 5: Solve for x
    x = 12,634,648,579.89/105,182.60
  6. Step 6: Final answer
    x = 120,121.09

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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.