Home / 90,987.69-136,330.59-55,341.14

Finding the Fourth Proportional to 90,987.69, 136,330.59 and 55,341.14

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Solution

The fourth proportional to 90,987.69, 136,330.59 and 55,341.14 is: 82,919.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,987.69 : 136,330.59 = 55,341.14 : x
  2. Step 2: Convert to fraction form
    90,987.69/136,330.59 = 55,341.14/x
  3. Step 3: Cross multiply
    90,987.69x = 136,330.59 × 55,341.14
  4. Step 4: Simplify right side
    90,987.69x = 7,544,690,267.47
  5. Step 5: Solve for x
    x = 7,544,690,267.47/90,987.69
  6. Step 6: Final answer
    x = 82,919.90

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1.5x scale

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.