Home / 145,435.38-218,128.77-40,264.98

Finding the Fourth Proportional to 145,435.38, 218,128.77 and 40,264.98

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Solution

The fourth proportional to 145,435.38, 218,128.77 and 40,264.98 is: 60,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,435.38 : 218,128.77 = 40,264.98 : x
  2. Step 2: Convert to fraction form
    145,435.38/218,128.77 = 40,264.98/x
  3. Step 3: Cross multiply
    145,435.38x = 218,128.77 × 40,264.98
  4. Step 4: Simplify right side
    145,435.38x = 8,782,950,561.47
  5. Step 5: Solve for x
    x = 8,782,950,561.47/145,435.38
  6. Step 6: Final answer
    x = 60,390.74

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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.