Home / 137,740.90-206,588.67-128,774.74

Finding the Fourth Proportional to 137,740.90, 206,588.67 and 128,774.74

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Solution

The fourth proportional to 137,740.90, 206,588.67 and 128,774.74 is: 193,140.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,740.90 : 206,588.67 = 128,774.74 : x
  2. Step 2: Convert to fraction form
    137,740.90/206,588.67 = 128,774.74/x
  3. Step 3: Cross multiply
    137,740.90x = 206,588.67 × 128,774.74
  4. Step 4: Simplify right side
    137,740.90x = 26,603,402,266.20
  5. Step 5: Solve for x
    x = 26,603,402,266.20/137,740.90
  6. Step 6: Final answer
    x = 193,140.91

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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.