Home / 142,434.32-196,551.36-77,890.71

Finding the Fourth Proportional to 142,434.32, 196,551.36 and 77,890.71

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Solution

The fourth proportional to 142,434.32, 196,551.36 and 77,890.71 is: 107,484.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,434.32 : 196,551.36 = 77,890.71 : x
  2. Step 2: Convert to fraction form
    142,434.32/196,551.36 = 77,890.71/x
  3. Step 3: Cross multiply
    142,434.32x = 196,551.36 × 77,890.71
  4. Step 4: Simplify right side
    142,434.32x = 15,309,525,718.93
  5. Step 5: Solve for x
    x = 15,309,525,718.93/142,434.32
  6. Step 6: Final answer
    x = 107,484.81

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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.