Home / 190,306.13-262,622.48-105,428.66

Finding the Fourth Proportional to 190,306.13, 262,622.48 and 105,428.66

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Solution

The fourth proportional to 190,306.13, 262,622.48 and 105,428.66 is: 145,491.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,306.13 : 262,622.48 = 105,428.66 : x
  2. Step 2: Convert to fraction form
    190,306.13/262,622.48 = 105,428.66/x
  3. Step 3: Cross multiply
    190,306.13x = 262,622.48 × 105,428.66
  4. Step 4: Simplify right side
    190,306.13x = 27,687,934,312.02
  5. Step 5: Solve for x
    x = 27,687,934,312.02/190,306.13
  6. Step 6: Final answer
    x = 145,491.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.