Home / 148,913.80-223,629.90-78,929.80

Finding the Fourth Proportional to 148,913.80, 223,629.90 and 78,929.80

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Solution

The fourth proportional to 148,913.80, 223,629.90 and 78,929.80 is: 118,532.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,913.80 : 223,629.90 = 78,929.80 : x
  2. Step 2: Convert to fraction form
    148,913.80/223,629.90 = 78,929.80/x
  3. Step 3: Cross multiply
    148,913.80x = 223,629.90 × 78,929.80
  4. Step 4: Simplify right side
    148,913.80x = 17,651,063,281.02
  5. Step 5: Solve for x
    x = 17,651,063,281.02/148,913.80
  6. Step 6: Final answer
    x = 118,532.09

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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.