Home / 155,052,542.78-213,977,073.20-85,442,407.65

Finding the Fourth Proportional to 155,052,542.78, 213,977,073.20 and 85,442,407.65

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Solution

The fourth proportional to 155,052,542.78, 213,977,073.20 and 85,442,407.65 is: 117,913,037.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,052,542.78 : 213,977,073.20 = 85,442,407.65 : x
  2. Step 2: Convert to fraction form
    155,052,542.78/213,977,073.20 = 85,442,407.65/x
  3. Step 3: Cross multiply
    155,052,542.78x = 213,977,073.20 × 85,442,407.65
  4. Step 4: Simplify right side
    155,052,542.78x = 18,282,716,316,108,292
  5. Step 5: Solve for x
    x = 18,282,716,316,108,292/155,052,542.78
  6. Step 6: Final answer
    x = 117,913,037.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.