Home / 103,274.58-142,405.08-71,388.12

Finding the Fourth Proportional to 103,274.58, 142,405.08 and 71,388.12

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Solution

The fourth proportional to 103,274.58, 142,405.08 and 71,388.12 is: 98,436.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,274.58 : 142,405.08 = 71,388.12 : x
  2. Step 2: Convert to fraction form
    103,274.58/142,405.08 = 71,388.12/x
  3. Step 3: Cross multiply
    103,274.58x = 142,405.08 × 71,388.12
  4. Step 4: Simplify right side
    103,274.58x = 10,166,030,405.63
  5. Step 5: Solve for x
    x = 10,166,030,405.63/103,274.58
  6. Step 6: Final answer
    x = 98,436.91

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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.