Home / 261,879,783.68-392,850,067.33-87,018,422.85

Finding the Fourth Proportional to 261,879,783.68, 392,850,067.33 and 87,018,422.85

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Solution

The fourth proportional to 261,879,783.68, 392,850,067.33 and 87,018,422.85 is: 130,537,732.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,879,783.68 : 392,850,067.33 = 87,018,422.85 : x
  2. Step 2: Convert to fraction form
    261,879,783.68/392,850,067.33 = 87,018,422.85/x
  3. Step 3: Cross multiply
    261,879,783.68x = 392,850,067.33 × 87,018,422.85
  4. Step 4: Simplify right side
    261,879,783.68x = 34,185,193,275,681,684
  5. Step 5: Solve for x
    x = 34,185,193,275,681,684/261,879,783.68
  6. Step 6: Final answer
    x = 130,537,732.98

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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.