Home / 289,764.15-434,673.87-90,030.90

Finding the Fourth Proportional to 289,764.15, 434,673.87 and 90,030.90

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Solution

The fourth proportional to 289,764.15, 434,673.87 and 90,030.90 is: 135,054.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,764.15 : 434,673.87 = 90,030.90 : x
  2. Step 2: Convert to fraction form
    289,764.15/434,673.87 = 90,030.90/x
  3. Step 3: Cross multiply
    289,764.15x = 434,673.87 × 90,030.90
  4. Step 4: Simplify right side
    289,764.15x = 39,134,079,722.58
  5. Step 5: Solve for x
    x = 39,134,079,722.58/289,764.15
  6. Step 6: Final answer
    x = 135,054.94

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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.