Home / 140,171,564.80-193,434,700.80-78,292,806.40

Finding the Fourth Proportional to 140,171,564.80, 193,434,700.80 and 78,292,806.40

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Solution

The fourth proportional to 140,171,564.80, 193,434,700.80 and 78,292,806.40 is: 108,042,922.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,171,564.80 : 193,434,700.80 = 78,292,806.40 : x
  2. Step 2: Convert to fraction form
    140,171,564.80/193,434,700.80 = 78,292,806.40/x
  3. Step 3: Cross multiply
    140,171,564.80x = 193,434,700.80 × 78,292,806.40
  4. Step 4: Simplify right side
    140,171,564.80x = 15,144,545,580,776,328
  5. Step 5: Solve for x
    x = 15,144,545,580,776,328/140,171,564.80
  6. Step 6: Final answer
    x = 108,042,922.99

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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.