Home / 142,572.09-196,718.00-85,202.81

Finding the Fourth Proportional to 142,572.09, 196,718.00 and 85,202.81

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Solution

The fourth proportional to 142,572.09, 196,718.00 and 85,202.81 is: 117,561.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,572.09 : 196,718.00 = 85,202.81 : x
  2. Step 2: Convert to fraction form
    142,572.09/196,718.00 = 85,202.81/x
  3. Step 3: Cross multiply
    142,572.09x = 196,718.00 × 85,202.81
  4. Step 4: Simplify right side
    142,572.09x = 16,760,924,967.98
  5. Step 5: Solve for x
    x = 16,760,924,967.98/142,572.09
  6. Step 6: Final answer
    x = 117,561.05

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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.