Home / 135,740.03-202,507.86-128,391.71

Finding the Fourth Proportional to 135,740.03, 202,507.86 and 128,391.71

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Solution

The fourth proportional to 135,740.03, 202,507.86 and 128,391.71 is: 191,545.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,740.03 : 202,507.86 = 128,391.71 : x
  2. Step 2: Convert to fraction form
    135,740.03/202,507.86 = 128,391.71/x
  3. Step 3: Cross multiply
    135,740.03x = 202,507.86 × 128,391.71
  4. Step 4: Simplify right side
    135,740.03x = 26,000,329,421.30
  5. Step 5: Solve for x
    x = 26,000,329,421.30/135,740.03
  6. Step 6: Final answer
    x = 191,545.05

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1.5x scale

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.