Home / 103,383.50-142,601.19-74,655.32

Finding the Fourth Proportional to 103,383.50, 142,601.19 and 74,655.32

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Solution

The fourth proportional to 103,383.50, 142,601.19 and 74,655.32 is: 102,975.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,383.50 : 142,601.19 = 74,655.32 : x
  2. Step 2: Convert to fraction form
    103,383.50/142,601.19 = 74,655.32/x
  3. Step 3: Cross multiply
    103,383.50x = 142,601.19 × 74,655.32
  4. Step 4: Simplify right side
    103,383.50x = 10,645,937,471.83
  5. Step 5: Solve for x
    x = 10,645,937,471.83/103,383.50
  6. Step 6: Final answer
    x = 102,975.21

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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.