Home / 105,716.79-145,890.45-57,971.34

Finding the Fourth Proportional to 105,716.79, 145,890.45 and 57,971.34

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Solution

The fourth proportional to 105,716.79, 145,890.45 and 57,971.34 is: 80,001.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,716.79 : 145,890.45 = 57,971.34 : x
  2. Step 2: Convert to fraction form
    105,716.79/145,890.45 = 57,971.34/x
  3. Step 3: Cross multiply
    105,716.79x = 145,890.45 × 57,971.34
  4. Step 4: Simplify right side
    105,716.79x = 8,457,464,879.70
  5. Step 5: Solve for x
    x = 8,457,464,879.70/105,716.79
  6. Step 6: Final answer
    x = 80,001.15

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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.