Home / 102,119.12-140,923.58-56,177.76

Finding the Fourth Proportional to 102,119.12, 140,923.58 and 56,177.76

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Solution

The fourth proportional to 102,119.12, 140,923.58 and 56,177.76 is: 77,524.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,119.12 : 140,923.58 = 56,177.76 : x
  2. Step 2: Convert to fraction form
    102,119.12/140,923.58 = 56,177.76/x
  3. Step 3: Cross multiply
    102,119.12x = 140,923.58 × 56,177.76
  4. Step 4: Simplify right side
    102,119.12x = 7,916,771,055.58
  5. Step 5: Solve for x
    x = 7,916,771,055.58/102,119.12
  6. Step 6: Final answer
    x = 77,524.87

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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.