Home / 142,039.32-196,015.19-77,513.10

Finding the Fourth Proportional to 142,039.32, 196,015.19 and 77,513.10

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Solution

The fourth proportional to 142,039.32, 196,015.19 and 77,513.10 is: 106,968.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,039.32 : 196,015.19 = 77,513.10 : x
  2. Step 2: Convert to fraction form
    142,039.32/196,015.19 = 77,513.10/x
  3. Step 3: Cross multiply
    142,039.32x = 196,015.19 × 77,513.10
  4. Step 4: Simplify right side
    142,039.32x = 15,193,744,636.42
  5. Step 5: Solve for x
    x = 15,193,744,636.42/142,039.32
  6. Step 6: Final answer
    x = 106,968.58

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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.