Home / 128,952,408.30-193,428,612.45-85,681,301.10

Finding the Fourth Proportional to 128,952,408.30, 193,428,612.45 and 85,681,301.10

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Solution

The fourth proportional to 128,952,408.30, 193,428,612.45 and 85,681,301.10 is: 128,521,951.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,952,408.30 : 193,428,612.45 = 85,681,301.10 : x
  2. Step 2: Convert to fraction form
    128,952,408.30/193,428,612.45 = 85,681,301.10/x
  3. Step 3: Cross multiply
    128,952,408.30x = 193,428,612.45 × 85,681,301.10
  4. Step 4: Simplify right side
    128,952,408.30x = 16,573,215,184,683,656
  5. Step 5: Solve for x
    x = 16,573,215,184,683,656/128,952,408.30
  6. Step 6: Final answer
    x = 128,521,951.65

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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.