Home / 128,952,438.30-193,428,657.45-85,681,331.10

Finding the Fourth Proportional to 128,952,438.30, 193,428,657.45 and 85,681,331.10

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Solution

The fourth proportional to 128,952,438.30, 193,428,657.45 and 85,681,331.10 is: 128,521,996.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,438.30 : 193,428,657.45 = 85,681,331.10 : x
  2. Step 2: Convert to fraction form
    128,952,438.30/193,428,657.45 = 85,681,331.10/x
  3. Step 3: Cross multiply
    128,952,438.30x = 193,428,657.45 × 85,681,331.10
  4. Step 4: Simplify right side
    128,952,438.30x = 16,573,224,843,201,930
  5. Step 5: Solve for x
    x = 16,573,224,843,201,930/128,952,438.30
  6. Step 6: Final answer
    x = 128,521,996.65

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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.