Home / 123,430,221.60-185,145,332.40-103,424,128.80

Finding the Fourth Proportional to 123,430,221.60, 185,145,332.40 and 103,424,128.80

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Solution

The fourth proportional to 123,430,221.60, 185,145,332.40 and 103,424,128.80 is: 155,136,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,430,221.60 : 185,145,332.40 = 103,424,128.80 : x
  2. Step 2: Convert to fraction form
    123,430,221.60/185,145,332.40 = 103,424,128.80/x
  3. Step 3: Cross multiply
    123,430,221.60x = 185,145,332.40 × 103,424,128.80
  4. Step 4: Simplify right side
    123,430,221.60x = 19,148,494,704,856,412
  5. Step 5: Solve for x
    x = 19,148,494,704,856,412/123,430,221.60
  6. Step 6: Final answer
    x = 155,136,193.20

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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.