Home / 103,516.82-142,924.02-79,275.01

Finding the Fourth Proportional to 103,516.82, 142,924.02 and 79,275.01

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Solution

The fourth proportional to 103,516.82, 142,924.02 and 79,275.01 is: 109,453.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,516.82 : 142,924.02 = 79,275.01 : x
  2. Step 2: Convert to fraction form
    103,516.82/142,924.02 = 79,275.01/x
  3. Step 3: Cross multiply
    103,516.82x = 142,924.02 × 79,275.01
  4. Step 4: Simplify right side
    103,516.82x = 11,330,303,837.54
  5. Step 5: Solve for x
    x = 11,330,303,837.54/103,516.82
  6. Step 6: Final answer
    x = 109,453.75

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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.