Home / 149,265.64-205,636.21-103,865.55

Finding the Fourth Proportional to 149,265.64, 205,636.21 and 103,865.55

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Solution

The fourth proportional to 149,265.64, 205,636.21 and 103,865.55 is: 143,090.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,265.64 : 205,636.21 = 103,865.55 : x
  2. Step 2: Convert to fraction form
    149,265.64/205,636.21 = 103,865.55/x
  3. Step 3: Cross multiply
    149,265.64x = 205,636.21 × 103,865.55
  4. Step 4: Simplify right side
    149,265.64x = 21,358,518,051.57
  5. Step 5: Solve for x
    x = 21,358,518,051.57/149,265.64
  6. Step 6: Final answer
    x = 143,090.65

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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.