Home / 100,897.34-139,262.96-58,480.47

Finding the Fourth Proportional to 100,897.34, 139,262.96 and 58,480.47

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Solution

The fourth proportional to 100,897.34, 139,262.96 and 58,480.47 is: 80,717.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,897.34 : 139,262.96 = 58,480.47 : x
  2. Step 2: Convert to fraction form
    100,897.34/139,262.96 = 58,480.47/x
  3. Step 3: Cross multiply
    100,897.34x = 139,262.96 × 58,480.47
  4. Step 4: Simplify right side
    100,897.34x = 8,144,163,500.59
  5. Step 5: Solve for x
    x = 8,144,163,500.59/100,897.34
  6. Step 6: Final answer
    x = 80,717.33

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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.