Home / 142,313.09-213,026.77-89,611.86

Finding the Fourth Proportional to 142,313.09, 213,026.77 and 89,611.86

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Solution

The fourth proportional to 142,313.09, 213,026.77 and 89,611.86 is: 134,138.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,313.09 : 213,026.77 = 89,611.86 : x
  2. Step 2: Convert to fraction form
    142,313.09/213,026.77 = 89,611.86/x
  3. Step 3: Cross multiply
    142,313.09x = 213,026.77 × 89,611.86
  4. Step 4: Simplify right side
    142,313.09x = 19,089,724,332.90
  5. Step 5: Solve for x
    x = 19,089,724,332.90/142,313.09
  6. Step 6: Final answer
    x = 134,138.92

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.