Home / 142,364.80-196,483.08-81,934.30

Finding the Fourth Proportional to 142,364.80, 196,483.08 and 81,934.30

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Solution

The fourth proportional to 142,364.80, 196,483.08 and 81,934.30 is: 113,080.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,364.80 : 196,483.08 = 81,934.30 : x
  2. Step 2: Convert to fraction form
    142,364.80/196,483.08 = 81,934.30/x
  3. Step 3: Cross multiply
    142,364.80x = 196,483.08 × 81,934.30
  4. Step 4: Simplify right side
    142,364.80x = 16,098,703,621.64
  5. Step 5: Solve for x
    x = 16,098,703,621.64/142,364.80
  6. Step 6: Final answer
    x = 113,080.65

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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.