Home / 142,717.50-196,425.81-122,345.64

Finding the Fourth Proportional to 142,717.50, 196,425.81 and 122,345.64

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Solution

The fourth proportional to 142,717.50, 196,425.81 and 122,345.64 is: 168,387.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,717.50 : 196,425.81 = 122,345.64 : x
  2. Step 2: Convert to fraction form
    142,717.50/196,425.81 = 122,345.64/x
  3. Step 3: Cross multiply
    142,717.50x = 196,425.81 × 122,345.64
  4. Step 4: Simplify right side
    142,717.50x = 24,031,841,436.97
  5. Step 5: Solve for x
    x = 24,031,841,436.97/142,717.50
  6. Step 6: Final answer
    x = 168,387.49

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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.