Home / 142,435.64-196,769.58-112,420.28

Finding the Fourth Proportional to 142,435.64, 196,769.58 and 112,420.28

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Solution

The fourth proportional to 142,435.64, 196,769.58 and 112,420.28 is: 155,304.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,435.64 : 196,769.58 = 112,420.28 : x
  2. Step 2: Convert to fraction form
    142,435.64/196,769.58 = 112,420.28/x
  3. Step 3: Cross multiply
    142,435.64x = 196,769.58 × 112,420.28
  4. Step 4: Simplify right side
    142,435.64x = 22,120,891,279.08
  5. Step 5: Solve for x
    x = 22,120,891,279.08/142,435.64
  6. Step 6: Final answer
    x = 155,304.47

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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.