Home / 135,741.36-202,509.86-128,393.04

Finding the Fourth Proportional to 135,741.36, 202,509.86 and 128,393.04

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Solution

The fourth proportional to 135,741.36, 202,509.86 and 128,393.04 is: 191,547.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,741.36 : 202,509.86 = 128,393.04 : x
  2. Step 2: Convert to fraction form
    135,741.36/202,509.86 = 128,393.04/x
  3. Step 3: Cross multiply
    135,741.36x = 202,509.86 × 128,393.04
  4. Step 4: Simplify right side
    135,741.36x = 26,000,856,555.37
  5. Step 5: Solve for x
    x = 26,000,856,555.37/135,741.36
  6. Step 6: Final answer
    x = 191,547.05

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.