Home / 142,955.15-197,316.81-89,208.41

Finding the Fourth Proportional to 142,955.15, 197,316.81 and 89,208.41

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Solution

The fourth proportional to 142,955.15, 197,316.81 and 89,208.41 is: 123,131.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,955.15 : 197,316.81 = 89,208.41 : x
  2. Step 2: Convert to fraction form
    142,955.15/197,316.81 = 89,208.41/x
  3. Step 3: Cross multiply
    142,955.15x = 197,316.81 × 89,208.41
  4. Step 4: Simplify right side
    142,955.15x = 17,602,317,899.79
  5. Step 5: Solve for x
    x = 17,602,317,899.79/142,955.15
  6. Step 6: Final answer
    x = 123,131.76

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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.