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Finding the Fourth Proportional to 135,791.40, 187,483.50 and 103,903.32

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Solution

The fourth proportional to 135,791.40, 187,483.50 and 103,903.32 is: 143,456.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,791.40 : 187,483.50 = 103,903.32 : x
  2. Step 2: Convert to fraction form
    135,791.40/187,483.50 = 103,903.32/x
  3. Step 3: Cross multiply
    135,791.40x = 187,483.50 × 103,903.32
  4. Step 4: Simplify right side
    135,791.40x = 19,480,158,095.22
  5. Step 5: Solve for x
    x = 19,480,158,095.22/135,791.40
  6. Step 6: Final answer
    x = 143,456.49

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1.5x scale

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.