Home / 142,261.32-196,303.88-78,595.32

Finding the Fourth Proportional to 142,261.32, 196,303.88 and 78,595.32

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Solution

The fourth proportional to 142,261.32, 196,303.88 and 78,595.32 is: 108,452.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,261.32 : 196,303.88 = 78,595.32 : x
  2. Step 2: Convert to fraction form
    142,261.32/196,303.88 = 78,595.32/x
  3. Step 3: Cross multiply
    142,261.32x = 196,303.88 × 78,595.32
  4. Step 4: Simplify right side
    142,261.32x = 15,428,566,265.84
  5. Step 5: Solve for x
    x = 15,428,566,265.84/142,261.32
  6. Step 6: Final answer
    x = 108,452.29

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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.