Home / 140,079.45-193,309.25-76,416.80

Finding the Fourth Proportional to 140,079.45, 193,309.25 and 76,416.80

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Solution

The fourth proportional to 140,079.45, 193,309.25 and 76,416.80 is: 105,454.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,079.45 : 193,309.25 = 76,416.80 : x
  2. Step 2: Convert to fraction form
    140,079.45/193,309.25 = 76,416.80/x
  3. Step 3: Cross multiply
    140,079.45x = 193,309.25 × 76,416.80
  4. Step 4: Simplify right side
    140,079.45x = 14,772,072,946.77
  5. Step 5: Solve for x
    x = 14,772,072,946.77/140,079.45
  6. Step 6: Final answer
    x = 105,454.96

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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.