Home / 85,536,048.20-128,052,129.90-80,553,187.40

Finding the Fourth Proportional to 85,536,048.20, 128,052,129.90 and 80,553,187.40

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Solution

The fourth proportional to 85,536,048.20, 128,052,129.90 and 80,553,187.40 is: 120,592,515.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,536,048.20 : 128,052,129.90 = 80,553,187.40 : x
  2. Step 2: Convert to fraction form
    85,536,048.20/128,052,129.90 = 80,553,187.40/x
  3. Step 3: Cross multiply
    85,536,048.20x = 128,052,129.90 × 80,553,187.40
  4. Step 4: Simplify right side
    85,536,048.20x = 10,315,007,216,803,844
  5. Step 5: Solve for x
    x = 10,315,007,216,803,844/85,536,048.20
  6. Step 6: Final answer
    x = 120,592,515.48

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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.