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Finding the Fourth Proportional to 144,151.76, 198,929.36 and 80,489.52

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Solution

The fourth proportional to 144,151.76, 198,929.36 and 80,489.52 is: 111,075.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,151.76 : 198,929.36 = 80,489.52 : x
  2. Step 2: Convert to fraction form
    144,151.76/198,929.36 = 80,489.52/x
  3. Step 3: Cross multiply
    144,151.76x = 198,929.36 × 80,489.52
  4. Step 4: Simplify right side
    144,151.76x = 16,011,728,700.31
  5. Step 5: Solve for x
    x = 16,011,728,700.31/144,151.76
  6. Step 6: Final answer
    x = 111,075.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.