Home / 100,901.72-139,244.38-58,484.86

Finding the Fourth Proportional to 100,901.72, 139,244.38 and 58,484.86

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Solution

The fourth proportional to 100,901.72, 139,244.38 and 58,484.86 is: 80,709.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,901.72 : 139,244.38 = 58,484.86 : x
  2. Step 2: Convert to fraction form
    100,901.72/139,244.38 = 58,484.86/x
  3. Step 3: Cross multiply
    100,901.72x = 139,244.38 × 58,484.86
  4. Step 4: Simplify right side
    100,901.72x = 8,143,687,575.76
  5. Step 5: Solve for x
    x = 8,143,687,575.76/100,901.72
  6. Step 6: Final answer
    x = 80,709.10

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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.