Home / 100,763.72-139,048.02-58,319.24

Finding the Fourth Proportional to 100,763.72, 139,048.02 and 58,319.24

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Solution

The fourth proportional to 100,763.72, 139,048.02 and 58,319.24 is: 80,477.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,763.72 : 139,048.02 = 58,319.24 : x
  2. Step 2: Convert to fraction form
    100,763.72/139,048.02 = 58,319.24/x
  3. Step 3: Cross multiply
    100,763.72x = 139,048.02 × 58,319.24
  4. Step 4: Simplify right side
    100,763.72x = 8,109,174,849.90
  5. Step 5: Solve for x
    x = 8,109,174,849.90/100,763.72
  6. Step 6: Final answer
    x = 80,477.13

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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.