Home / 192,704,420.80-288,960,986.40-69,877,835.20

Finding the Fourth Proportional to 192,704,420.80, 288,960,986.40 and 69,877,835.20

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Solution

The fourth proportional to 192,704,420.80, 288,960,986.40 and 69,877,835.20 is: 104,782,070.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,704,420.80 : 288,960,986.40 = 69,877,835.20 : x
  2. Step 2: Convert to fraction form
    192,704,420.80/288,960,986.40 = 69,877,835.20/x
  3. Step 3: Cross multiply
    192,704,420.80x = 288,960,986.40 × 69,877,835.20
  4. Step 4: Simplify right side
    192,704,420.80x = 20,191,968,186,888,640
  5. Step 5: Solve for x
    x = 20,191,968,186,888,640/192,704,420.80
  6. Step 6: Final answer
    x = 104,782,070.40

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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.