Home / 100,810.36-139,136.70-58,372.84

Finding the Fourth Proportional to 100,810.36, 139,136.70 and 58,372.84

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Solution

The fourth proportional to 100,810.36, 139,136.70 and 58,372.84 is: 80,565.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,810.36 : 139,136.70 = 58,372.84 : x
  2. Step 2: Convert to fraction form
    100,810.36/139,136.70 = 58,372.84/x
  3. Step 3: Cross multiply
    100,810.36x = 139,136.70 × 58,372.84
  4. Step 4: Simplify right side
    100,810.36x = 8,121,804,327.23
  5. Step 5: Solve for x
    x = 8,121,804,327.23/100,810.36
  6. Step 6: Final answer
    x = 80,565.18

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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.