Home / 107,391.57-148,216.53-77,276.58

Finding the Fourth Proportional to 107,391.57, 148,216.53 and 77,276.58

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Solution

The fourth proportional to 107,391.57, 148,216.53 and 77,276.58 is: 106,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,391.57 : 148,216.53 = 77,276.58 : x
  2. Step 2: Convert to fraction form
    107,391.57/148,216.53 = 77,276.58/x
  3. Step 3: Cross multiply
    107,391.57x = 148,216.53 × 77,276.58
  4. Step 4: Simplify right side
    107,391.57x = 11,453,666,537.87
  5. Step 5: Solve for x
    x = 11,453,666,537.87/107,391.57
  6. Step 6: Final answer
    x = 106,653.31

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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.