Home / 144,147.60-198,931.68-80,485.92

Finding the Fourth Proportional to 144,147.60, 198,931.68 and 80,485.92

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Solution

The fourth proportional to 144,147.60, 198,931.68 and 80,485.92 is: 111,075.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,147.60 : 198,931.68 = 80,485.92 : x
  2. Step 2: Convert to fraction form
    144,147.60/198,931.68 = 80,485.92/x
  3. Step 3: Cross multiply
    144,147.60x = 198,931.68 × 80,485.92
  4. Step 4: Simplify right side
    144,147.60x = 16,011,199,281.95
  5. Step 5: Solve for x
    x = 16,011,199,281.95/144,147.60
  6. Step 6: Final answer
    x = 111,075.03

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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.