Home / 142,341.81-196,432.51-77,811.18

Finding the Fourth Proportional to 142,341.81, 196,432.51 and 77,811.18

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Solution

The fourth proportional to 142,341.81, 196,432.51 and 77,811.18 is: 107,379.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,341.81 : 196,432.51 = 77,811.18 : x
  2. Step 2: Convert to fraction form
    142,341.81/196,432.51 = 77,811.18/x
  3. Step 3: Cross multiply
    142,341.81x = 196,432.51 × 77,811.18
  4. Step 4: Simplify right side
    142,341.81x = 15,284,645,384.87
  5. Step 5: Solve for x
    x = 15,284,645,384.87/142,341.81
  6. Step 6: Final answer
    x = 107,379.88

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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.