Home / 100,862.72-139,184.64-58,418.24

Finding the Fourth Proportional to 100,862.72, 139,184.64 and 58,418.24

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Solution

The fourth proportional to 100,862.72, 139,184.64 and 58,418.24 is: 80,613.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,862.72 : 139,184.64 = 58,418.24 : x
  2. Step 2: Convert to fraction form
    100,862.72/139,184.64 = 58,418.24/x
  3. Step 3: Cross multiply
    100,862.72x = 139,184.64 × 58,418.24
  4. Step 4: Simplify right side
    100,862.72x = 8,130,921,703.83
  5. Step 5: Solve for x
    x = 8,130,921,703.83/100,862.72
  6. Step 6: Final answer
    x = 80,613.75

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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.