Home / 142,158.36-196,178.36-81,740.82

Finding the Fourth Proportional to 142,158.36, 196,178.36 and 81,740.82

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Solution

The fourth proportional to 142,158.36, 196,178.36 and 81,740.82 is: 112,802.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,158.36 : 196,178.36 = 81,740.82 : x
  2. Step 2: Convert to fraction form
    142,158.36/196,178.36 = 81,740.82/x
  3. Step 3: Cross multiply
    142,158.36x = 196,178.36 × 81,740.82
  4. Step 4: Simplify right side
    142,158.36x = 16,035,780,012.66
  5. Step 5: Solve for x
    x = 16,035,780,012.66/142,158.36
  6. Step 6: Final answer
    x = 112,802.23

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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.