Home / 190,621-285,931.50-130,590.28

Finding the Fourth Proportional to 190,621, 285,931.50 and 130,590.28

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Solution

The fourth proportional to 190,621, 285,931.50 and 130,590.28 is: 195,885.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,621 : 285,931.50 = 130,590.28 : x
  2. Step 2: Convert to fraction form
    190,621/285,931.50 = 130,590.28/x
  3. Step 3: Cross multiply
    190,621x = 285,931.50 × 130,590.28
  4. Step 4: Simplify right side
    190,621x = 37,339,874,645.82
  5. Step 5: Solve for x
    x = 37,339,874,645.82/190,621
  6. Step 6: Final answer
    x = 195,885.42

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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.