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Finding the Fourth Proportional to 103,810.52, 142,324.19 and 101,918.81

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Solution

The fourth proportional to 103,810.52, 142,324.19 and 101,918.81 is: 139,730.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,810.52 : 142,324.19 = 101,918.81 : x
  2. Step 2: Convert to fraction form
    103,810.52/142,324.19 = 101,918.81/x
  3. Step 3: Cross multiply
    103,810.52x = 142,324.19 × 101,918.81
  4. Step 4: Simplify right side
    103,810.52x = 14,505,512,079.01
  5. Step 5: Solve for x
    x = 14,505,512,079.01/103,810.52
  6. Step 6: Final answer
    x = 139,730.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.