Home / 142,606.06-196,807.29-81,353.60

Finding the Fourth Proportional to 142,606.06, 196,807.29 and 81,353.60

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Solution

The fourth proportional to 142,606.06, 196,807.29 and 81,353.60 is: 112,274.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,606.06 : 196,807.29 = 81,353.60 : x
  2. Step 2: Convert to fraction form
    142,606.06/196,807.29 = 81,353.60/x
  3. Step 3: Cross multiply
    142,606.06x = 196,807.29 × 81,353.60
  4. Step 4: Simplify right side
    142,606.06x = 16,010,981,547.74
  5. Step 5: Solve for x
    x = 16,010,981,547.74/142,606.06
  6. Step 6: Final answer
    x = 112,274.20

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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.