Home / 100,758.19-139,030.77-58,308.52

Finding the Fourth Proportional to 100,758.19, 139,030.77 and 58,308.52

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Solution

The fourth proportional to 100,758.19, 139,030.77 and 58,308.52 is: 80,456.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,758.19 : 139,030.77 = 58,308.52 : x
  2. Step 2: Convert to fraction form
    100,758.19/139,030.77 = 58,308.52/x
  3. Step 3: Cross multiply
    100,758.19x = 139,030.77 × 58,308.52
  4. Step 4: Simplify right side
    100,758.19x = 8,106,678,433.16
  5. Step 5: Solve for x
    x = 8,106,678,433.16/100,758.19
  6. Step 6: Final answer
    x = 80,456.77

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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.