Home / 135,346.07-202,904.90-85,315.86

Finding the Fourth Proportional to 135,346.07, 202,904.90 and 85,315.86

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Solution

The fourth proportional to 135,346.07, 202,904.90 and 85,315.86 is: 127,901.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,346.07 : 202,904.90 = 85,315.86 : x
  2. Step 2: Convert to fraction form
    135,346.07/202,904.90 = 85,315.86/x
  3. Step 3: Cross multiply
    135,346.07x = 202,904.90 × 85,315.86
  4. Step 4: Simplify right side
    135,346.07x = 17,311,006,041.71
  5. Step 5: Solve for x
    x = 17,311,006,041.71/135,346.07
  6. Step 6: Final answer
    x = 127,901.81

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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.