Home / 128,304,145.40-192,456,218.10-120,745,873.40

Finding the Fourth Proportional to 128,304,145.40, 192,456,218.10 and 120,745,873.40

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Solution

The fourth proportional to 128,304,145.40, 192,456,218.10 and 120,745,873.40 is: 181,118,810.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,304,145.40 : 192,456,218.10 = 120,745,873.40 : x
  2. Step 2: Convert to fraction form
    128,304,145.40/192,456,218.10 = 120,745,873.40/x
  3. Step 3: Cross multiply
    128,304,145.40x = 192,456,218.10 × 120,745,873.40
  4. Step 4: Simplify right side
    128,304,145.40x = 23,238,294,145,745,388
  5. Step 5: Solve for x
    x = 23,238,294,145,745,388/128,304,145.40
  6. Step 6: Final answer
    x = 181,118,810.10

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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.