Home / 105,734.74-145,918.16-57,989.83

Finding the Fourth Proportional to 105,734.74, 145,918.16 and 57,989.83

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Solution

The fourth proportional to 105,734.74, 145,918.16 and 57,989.83 is: 80,028.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,734.74 : 145,918.16 = 57,989.83 : x
  2. Step 2: Convert to fraction form
    105,734.74/145,918.16 = 57,989.83/x
  3. Step 3: Cross multiply
    105,734.74x = 145,918.16 × 57,989.83
  4. Step 4: Simplify right side
    105,734.74x = 8,461,769,292.31
  5. Step 5: Solve for x
    x = 8,461,769,292.31/105,734.74
  6. Step 6: Final answer
    x = 80,028.28

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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.