Home / 106,728.06-147,278.96-58,978.33

Finding the Fourth Proportional to 106,728.06, 147,278.96 and 58,978.33

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Solution

The fourth proportional to 106,728.06, 147,278.96 and 58,978.33 is: 81,386.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,728.06 : 147,278.96 = 58,978.33 : x
  2. Step 2: Convert to fraction form
    106,728.06/147,278.96 = 58,978.33/x
  3. Step 3: Cross multiply
    106,728.06x = 147,278.96 × 58,978.33
  4. Step 4: Simplify right side
    106,728.06x = 8,686,266,663.02
  5. Step 5: Solve for x
    x = 8,686,266,663.02/106,728.06
  6. Step 6: Final answer
    x = 81,386.90

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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.