Home / 131,778,640.80-197,575,801.20-77,898,218.40

Finding the Fourth Proportional to 131,778,640.80, 197,575,801.20 and 77,898,218.40

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Solution

The fourth proportional to 131,778,640.80, 197,575,801.20 and 77,898,218.40 is: 116,792,849.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,778,640.80 : 197,575,801.20 = 77,898,218.40 : x
  2. Step 2: Convert to fraction form
    131,778,640.80/197,575,801.20 = 77,898,218.40/x
  3. Step 3: Cross multiply
    131,778,640.80x = 197,575,801.20 × 77,898,218.40
  4. Step 4: Simplify right side
    131,778,640.80x = 15,390,802,912,432,582
  5. Step 5: Solve for x
    x = 15,390,802,912,432,582/131,778,640.80
  6. Step 6: Final answer
    x = 116,792,849.12

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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.