Home / 128,304,002.40-192,456,003.60-79,931,061.60

Finding the Fourth Proportional to 128,304,002.40, 192,456,003.60 and 79,931,061.60

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Solution

The fourth proportional to 128,304,002.40, 192,456,003.60 and 79,931,061.60 is: 119,896,592.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,002.40 : 192,456,003.60 = 79,931,061.60 : x
  2. Step 2: Convert to fraction form
    128,304,002.40/192,456,003.60 = 79,931,061.60/x
  3. Step 3: Cross multiply
    128,304,002.40x = 192,456,003.60 × 79,931,061.60
  4. Step 4: Simplify right side
    128,304,002.40x = 15,383,212,679,041,420
  5. Step 5: Solve for x
    x = 15,383,212,679,041,420/128,304,002.40
  6. Step 6: Final answer
    x = 119,896,592.40

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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.