Home / 102,158.42-140,974.63-56,836.49

Finding the Fourth Proportional to 102,158.42, 140,974.63 and 56,836.49

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Solution

The fourth proportional to 102,158.42, 140,974.63 and 56,836.49 is: 78,432.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,158.42 : 140,974.63 = 56,836.49 : x
  2. Step 2: Convert to fraction form
    102,158.42/140,974.63 = 56,836.49/x
  3. Step 3: Cross multiply
    102,158.42x = 140,974.63 × 56,836.49
  4. Step 4: Simplify right side
    102,158.42x = 8,012,502,301.28
  5. Step 5: Solve for x
    x = 8,012,502,301.28/102,158.42
  6. Step 6: Final answer
    x = 78,432.13

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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.