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Finding the Fourth Proportional to 99,635.80, 139,593.80 and 99,635.80

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Solution

The fourth proportional to 99,635.80, 139,593.80 and 99,635.80 is: 139,593.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,635.80 : 139,593.80 = 99,635.80 : x
  2. Step 2: Convert to fraction form
    99,635.80/139,593.80 = 99,635.80/x
  3. Step 3: Cross multiply
    99,635.80x = 139,593.80 × 99,635.80
  4. Step 4: Simplify right side
    99,635.80x = 13,908,539,938.04
  5. Step 5: Solve for x
    x = 13,908,539,938.04/99,635.80
  6. Step 6: Final answer
    x = 139,593.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.