Home / 128,889,774.60-193,166,700.30-52,149,985.80

Finding the Fourth Proportional to 128,889,774.60, 193,166,700.30 and 52,149,985.80

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Solution

The fourth proportional to 128,889,774.60, 193,166,700.30 and 52,149,985.80 is: 78,157,019.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889,774.60 : 193,166,700.30 = 52,149,985.80 : x
  2. Step 2: Convert to fraction form
    128,889,774.60/193,166,700.30 = 52,149,985.80/x
  3. Step 3: Cross multiply
    128,889,774.60x = 193,166,700.30 × 52,149,985.80
  4. Step 4: Simplify right side
    128,889,774.60x = 10,073,640,677,677,856
  5. Step 5: Solve for x
    x = 10,073,640,677,677,856/128,889,774.60
  6. Step 6: Final answer
    x = 78,157,019.90

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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.