Home / 99,642,205.80-149,463,308.70-61,178,999.40

Finding the Fourth Proportional to 99,642,205.80, 149,463,308.70 and 61,178,999.40

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Solution

The fourth proportional to 99,642,205.80, 149,463,308.70 and 61,178,999.40 is: 91,768,499.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,642,205.80 : 149,463,308.70 = 61,178,999.40 : x
  2. Step 2: Convert to fraction form
    99,642,205.80/149,463,308.70 = 61,178,999.40/x
  3. Step 3: Cross multiply
    99,642,205.80x = 149,463,308.70 × 61,178,999.40
  4. Step 4: Simplify right side
    99,642,205.80x = 9,144,015,673,279,314
  5. Step 5: Solve for x
    x = 9,144,015,673,279,314/99,642,205.80
  6. Step 6: Final answer
    x = 91,768,499.10

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.