Home / 139,030.60-208,643.10-89,231.80

Finding the Fourth Proportional to 139,030.60, 208,643.10 and 89,231.80

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Solution

The fourth proportional to 139,030.60, 208,643.10 and 89,231.80 is: 133,910.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,030.60 : 208,643.10 = 89,231.80 : x
  2. Step 2: Convert to fraction form
    139,030.60/208,643.10 = 89,231.80/x
  3. Step 3: Cross multiply
    139,030.60x = 208,643.10 × 89,231.80
  4. Step 4: Simplify right side
    139,030.60x = 18,617,599,370.58
  5. Step 5: Solve for x
    x = 18,617,599,370.58/139,030.60
  6. Step 6: Final answer
    x = 133,910.08

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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.