Home / 138,880.16-208,396.07-58,905.72

Finding the Fourth Proportional to 138,880.16, 208,396.07 and 58,905.72

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Solution

The fourth proportional to 138,880.16, 208,396.07 and 58,905.72 is: 88,390.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,880.16 : 208,396.07 = 58,905.72 : x
  2. Step 2: Convert to fraction form
    138,880.16/208,396.07 = 58,905.72/x
  3. Step 3: Cross multiply
    138,880.16x = 208,396.07 × 58,905.72
  4. Step 4: Simplify right side
    138,880.16x = 12,275,720,548.52
  5. Step 5: Solve for x
    x = 12,275,720,548.52/138,880.16
  6. Step 6: Final answer
    x = 88,390.74

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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.