Home / 128,889,769.10-193,166,692.05-52,149,980.30

Finding the Fourth Proportional to 128,889,769.10, 193,166,692.05 and 52,149,980.30

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Solution

The fourth proportional to 128,889,769.10, 193,166,692.05 and 52,149,980.30 is: 78,157,011.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,889,769.10 : 193,166,692.05 = 52,149,980.30 : x
  2. Step 2: Convert to fraction form
    128,889,769.10/193,166,692.05 = 52,149,980.30/x
  3. Step 3: Cross multiply
    128,889,769.10x = 193,166,692.05 × 52,149,980.30
  4. Step 4: Simplify right side
    128,889,769.10x = 10,073,639,185,023,666
  5. Step 5: Solve for x
    x = 10,073,639,185,023,666/128,889,769.10
  6. Step 6: Final answer
    x = 78,157,011.65

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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.