Home / 142,510.41-196,661.33-77,979.40

Finding the Fourth Proportional to 142,510.41, 196,661.33 and 77,979.40

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Solution

The fourth proportional to 142,510.41, 196,661.33 and 77,979.40 is: 107,609.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,510.41 : 196,661.33 = 77,979.40 : x
  2. Step 2: Convert to fraction form
    142,510.41/196,661.33 = 77,979.40/x
  3. Step 3: Cross multiply
    142,510.41x = 196,661.33 × 77,979.40
  4. Step 4: Simplify right side
    142,510.41x = 15,335,531,927.47
  5. Step 5: Solve for x
    x = 15,335,531,927.47/142,510.41
  6. Step 6: Final answer
    x = 107,609.91

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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.