Home / 142,332.39-196,438.23-81,901.80

Finding the Fourth Proportional to 142,332.39, 196,438.23 and 81,901.80

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Solution

The fourth proportional to 142,332.39, 196,438.23 and 81,901.80 is: 113,035.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,332.39 : 196,438.23 = 81,901.80 : x
  2. Step 2: Convert to fraction form
    142,332.39/196,438.23 = 81,901.80/x
  3. Step 3: Cross multiply
    142,332.39x = 196,438.23 × 81,901.80
  4. Step 4: Simplify right side
    142,332.39x = 16,088,644,625.81
  5. Step 5: Solve for x
    x = 16,088,644,625.81/142,332.39
  6. Step 6: Final answer
    x = 113,035.72

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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.