Home / 106,345.08-146,710.98-78,001.56

Finding the Fourth Proportional to 106,345.08, 146,710.98 and 78,001.56

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Solution

The fourth proportional to 106,345.08, 146,710.98 and 78,001.56 is: 107,608.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,345.08 : 146,710.98 = 78,001.56 : x
  2. Step 2: Convert to fraction form
    106,345.08/146,710.98 = 78,001.56/x
  3. Step 3: Cross multiply
    106,345.08x = 146,710.98 × 78,001.56
  4. Step 4: Simplify right side
    106,345.08x = 11,443,685,309.13
  5. Step 5: Solve for x
    x = 11,443,685,309.13/106,345.08
  6. Step 6: Final answer
    x = 107,608.98

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1.5x scale

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.