Home / 190,535.76-285,381.36-130,420.80

Finding the Fourth Proportional to 190,535.76, 285,381.36 and 130,420.80

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Solution

The fourth proportional to 190,535.76, 285,381.36 and 130,420.80 is: 195,342.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,535.76 : 285,381.36 = 130,420.80 : x
  2. Step 2: Convert to fraction form
    190,535.76/285,381.36 = 130,420.80/x
  3. Step 3: Cross multiply
    190,535.76x = 285,381.36 × 130,420.80
  4. Step 4: Simplify right side
    190,535.76x = 37,219,665,276.29
  5. Step 5: Solve for x
    x = 37,219,665,276.29/190,535.76
  6. Step 6: Final answer
    x = 195,342.15

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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.