Home / 100,941.88-139,312.02-58,502.20

Finding the Fourth Proportional to 100,941.88, 139,312.02 and 58,502.20

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Solution

The fourth proportional to 100,941.88, 139,312.02 and 58,502.20 is: 80,740.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,941.88 : 139,312.02 = 58,502.20 : x
  2. Step 2: Convert to fraction form
    100,941.88/139,312.02 = 58,502.20/x
  3. Step 3: Cross multiply
    100,941.88x = 139,312.02 × 58,502.20
  4. Step 4: Simplify right side
    100,941.88x = 8,150,059,656.44
  5. Step 5: Solve for x
    x = 8,150,059,656.44/100,941.88
  6. Step 6: Final answer
    x = 80,740.12

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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.