Home / 218,903,136.80-328,138,129.20-103,685,165.60

Finding the Fourth Proportional to 218,903,136.80, 328,138,129.20 and 103,685,165.60

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Solution

The fourth proportional to 218,903,136.80, 328,138,129.20 and 103,685,165.60 is: 155,425,165.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,903,136.80 : 328,138,129.20 = 103,685,165.60 : x
  2. Step 2: Convert to fraction form
    218,903,136.80/328,138,129.20 = 103,685,165.60/x
  3. Step 3: Cross multiply
    218,903,136.80x = 328,138,129.20 × 103,685,165.60
  4. Step 4: Simplify right side
    218,903,136.80x = 34,023,056,265,776,192
  5. Step 5: Solve for x
    x = 34,023,056,265,776,192/218,903,136.80
  6. Step 6: Final answer
    x = 155,425,165.50

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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.