Home / 128,304,128.40-192,456,192.60-42,021,729.60

Finding the Fourth Proportional to 128,304,128.40, 192,456,192.60 and 42,021,729.60

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Solution

The fourth proportional to 128,304,128.40, 192,456,192.60 and 42,021,729.60 is: 63,032,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,128.40 : 192,456,192.60 = 42,021,729.60 : x
  2. Step 2: Convert to fraction form
    128,304,128.40/192,456,192.60 = 42,021,729.60/x
  3. Step 3: Cross multiply
    128,304,128.40x = 192,456,192.60 × 42,021,729.60
  4. Step 4: Simplify right side
    128,304,128.40x = 8,087,342,085,282,721
  5. Step 5: Solve for x
    x = 8,087,342,085,282,721/128,304,128.40
  6. Step 6: Final answer
    x = 63,032,594.40

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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.