Home / 102,060.34-140,844.02-56,120.78

Finding the Fourth Proportional to 102,060.34, 140,844.02 and 56,120.78

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Solution

The fourth proportional to 102,060.34, 140,844.02 and 56,120.78 is: 77,447.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,060.34 : 140,844.02 = 56,120.78 : x
  2. Step 2: Convert to fraction form
    102,060.34/140,844.02 = 56,120.78/x
  3. Step 3: Cross multiply
    102,060.34x = 140,844.02 × 56,120.78
  4. Step 4: Simplify right side
    102,060.34x = 7,904,276,332.24
  5. Step 5: Solve for x
    x = 7,904,276,332.24/102,060.34
  6. Step 6: Final answer
    x = 77,447.09

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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.