Home / 128,320,666.20-192,339,281.70-70,854,179.40

Finding the Fourth Proportional to 128,320,666.20, 192,339,281.70 and 70,854,179.40

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Solution

The fourth proportional to 128,320,666.20, 192,339,281.70 and 70,854,179.40 is: 106,203,017.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,320,666.20 : 192,339,281.70 = 70,854,179.40 : x
  2. Step 2: Convert to fraction form
    128,320,666.20/192,339,281.70 = 70,854,179.40/x
  3. Step 3: Cross multiply
    128,320,666.20x = 192,339,281.70 × 70,854,179.40
  4. Step 4: Simplify right side
    128,320,666.20x = 13,628,041,971,238,938
  5. Step 5: Solve for x
    x = 13,628,041,971,238,938/128,320,666.20
  6. Step 6: Final answer
    x = 106,203,017.60

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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.