Home / 198,145,128.60-297,217,692.90-68,709,720.60

Finding the Fourth Proportional to 198,145,128.60, 297,217,692.90 and 68,709,720.60

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Solution

The fourth proportional to 198,145,128.60, 297,217,692.90 and 68,709,720.60 is: 103,064,580.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,145,128.60 : 297,217,692.90 = 68,709,720.60 : x
  2. Step 2: Convert to fraction form
    198,145,128.60/297,217,692.90 = 68,709,720.60/x
  3. Step 3: Cross multiply
    198,145,128.60x = 297,217,692.90 × 68,709,720.60
  4. Step 4: Simplify right side
    198,145,128.60x = 20,421,744,636,535,600
  5. Step 5: Solve for x
    x = 20,421,744,636,535,600/198,145,128.60
  6. Step 6: Final answer
    x = 103,064,580.90

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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.