Home / 100,829.16-139,131.54-58,387.32

Finding the Fourth Proportional to 100,829.16, 139,131.54 and 58,387.32

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Solution

The fourth proportional to 100,829.16, 139,131.54 and 58,387.32 is: 80,567.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,829.16 : 139,131.54 = 58,387.32 : x
  2. Step 2: Convert to fraction form
    100,829.16/139,131.54 = 58,387.32/x
  3. Step 3: Cross multiply
    100,829.16x = 139,131.54 × 58,387.32
  4. Step 4: Simplify right side
    100,829.16x = 8,123,517,748.07
  5. Step 5: Solve for x
    x = 8,123,517,748.07/100,829.16
  6. Step 6: Final answer
    x = 80,567.15

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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.