Home / 102,742.85-141,745.08-64,480.07

Finding the Fourth Proportional to 102,742.85, 141,745.08 and 64,480.07

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Solution

The fourth proportional to 102,742.85, 141,745.08 and 64,480.07 is: 88,957.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,742.85 : 141,745.08 = 64,480.07 : x
  2. Step 2: Convert to fraction form
    102,742.85/141,745.08 = 64,480.07/x
  3. Step 3: Cross multiply
    102,742.85x = 141,745.08 × 64,480.07
  4. Step 4: Simplify right side
    102,742.85x = 9,139,731,649.43
  5. Step 5: Solve for x
    x = 9,139,731,649.43/102,742.85
  6. Step 6: Final answer
    x = 88,957.35

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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.