Home / 103,185.80-142,336.07-64,884.73

Finding the Fourth Proportional to 103,185.80, 142,336.07 and 64,884.73

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Solution

The fourth proportional to 103,185.80, 142,336.07 and 64,884.73 is: 89,502.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,185.80 : 142,336.07 = 64,884.73 : x
  2. Step 2: Convert to fraction form
    103,185.80/142,336.07 = 64,884.73/x
  3. Step 3: Cross multiply
    103,185.80x = 142,336.07 × 64,884.73
  4. Step 4: Simplify right side
    103,185.80x = 9,235,436,597.32
  5. Step 5: Solve for x
    x = 9,235,436,597.32/103,185.80
  6. Step 6: Final answer
    x = 89,502.98

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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.