Home / 102,157.85-140,979.12-56,222.78

Finding the Fourth Proportional to 102,157.85, 140,979.12 and 56,222.78

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Solution

The fourth proportional to 102,157.85, 140,979.12 and 56,222.78 is: 77,588.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,157.85 : 140,979.12 = 56,222.78 : x
  2. Step 2: Convert to fraction form
    102,157.85/140,979.12 = 56,222.78/x
  3. Step 3: Cross multiply
    102,157.85x = 140,979.12 × 56,222.78
  4. Step 4: Simplify right side
    102,157.85x = 7,926,238,048.35
  5. Step 5: Solve for x
    x = 7,926,238,048.35/102,157.85
  6. Step 6: Final answer
    x = 77,588.14

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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.