Home / 201,815,999.70-302,723,999.55-99,779,327.70

Finding the Fourth Proportional to 201,815,999.70, 302,723,999.55 and 99,779,327.70

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Solution

The fourth proportional to 201,815,999.70, 302,723,999.55 and 99,779,327.70 is: 149,668,991.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,815,999.70 : 302,723,999.55 = 99,779,327.70 : x
  2. Step 2: Convert to fraction form
    201,815,999.70/302,723,999.55 = 99,779,327.70/x
  3. Step 3: Cross multiply
    201,815,999.70x = 302,723,999.55 × 99,779,327.70
  4. Step 4: Simplify right side
    201,815,999.70x = 30,205,597,153,754,104
  5. Step 5: Solve for x
    x = 30,205,597,153,754,104/201,815,999.70
  6. Step 6: Final answer
    x = 149,668,991.55

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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.