Home / 105,918.18-146,168.09-58,172.50

Finding the Fourth Proportional to 105,918.18, 146,168.09 and 58,172.50

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Solution

The fourth proportional to 105,918.18, 146,168.09 and 58,172.50 is: 80,278.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,918.18 : 146,168.09 = 58,172.50 : x
  2. Step 2: Convert to fraction form
    105,918.18/146,168.09 = 58,172.50/x
  3. Step 3: Cross multiply
    105,918.18x = 146,168.09 × 58,172.50
  4. Step 4: Simplify right side
    105,918.18x = 8,502,963,215.53
  5. Step 5: Solve for x
    x = 8,502,963,215.53/105,918.18
  6. Step 6: Final answer
    x = 80,278.60

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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.