Home / 128,304,394.80-192,511,888.20-74,497,700.40

Finding the Fourth Proportional to 128,304,394.80, 192,511,888.20 and 74,497,700.40

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Solution

The fourth proportional to 128,304,394.80, 192,511,888.20 and 74,497,700.40 is: 111,778,657.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,394.80 : 192,511,888.20 = 74,497,700.40 : x
  2. Step 2: Convert to fraction form
    128,304,394.80/192,511,888.20 = 74,497,700.40/x
  3. Step 3: Cross multiply
    128,304,394.80x = 192,511,888.20 × 74,497,700.40
  4. Step 4: Simplify right side
    128,304,394.80x = 14,341,692,970,561,896
  5. Step 5: Solve for x
    x = 14,341,692,970,561,896/128,304,394.80
  6. Step 6: Final answer
    x = 111,778,657.25

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1.5x scale

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.