Home / 106,073.07-146,379.74-78,970.34

Finding the Fourth Proportional to 106,073.07, 146,379.74 and 78,970.34

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Solution

The fourth proportional to 106,073.07, 146,379.74 and 78,970.34 is: 108,978.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,073.07 : 146,379.74 = 78,970.34 : x
  2. Step 2: Convert to fraction form
    106,073.07/146,379.74 = 78,970.34/x
  3. Step 3: Cross multiply
    106,073.07x = 146,379.74 × 78,970.34
  4. Step 4: Simplify right side
    106,073.07x = 11,559,656,710.16
  5. Step 5: Solve for x
    x = 11,559,656,710.16/106,073.07
  6. Step 6: Final answer
    x = 108,978.24

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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.