Home / 103,868.06-143,142.14-75,138.93

Finding the Fourth Proportional to 103,868.06, 143,142.14 and 75,138.93

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Solution

The fourth proportional to 103,868.06, 143,142.14 and 75,138.93 is: 103,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,868.06 : 143,142.14 = 75,138.93 : x
  2. Step 2: Convert to fraction form
    103,868.06/143,142.14 = 75,138.93/x
  3. Step 3: Cross multiply
    103,868.06x = 143,142.14 × 75,138.93
  4. Step 4: Simplify right side
    103,868.06x = 10,755,547,425.36
  5. Step 5: Solve for x
    x = 10,755,547,425.36/103,868.06
  6. Step 6: Final answer
    x = 103,550.10

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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.