Home / 105,710.50-145,884.90-57,965.68

Finding the Fourth Proportional to 105,710.50, 145,884.90 and 57,965.68

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Solution

The fourth proportional to 105,710.50, 145,884.90 and 57,965.68 is: 79,995.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,710.50 : 145,884.90 = 57,965.68 : x
  2. Step 2: Convert to fraction form
    105,710.50/145,884.90 = 57,965.68/x
  3. Step 3: Cross multiply
    105,710.50x = 145,884.90 × 57,965.68
  4. Step 4: Simplify right side
    105,710.50x = 8,456,317,430.23
  5. Step 5: Solve for x
    x = 8,456,317,430.23/105,710.50
  6. Step 6: Final answer
    x = 79,995.06

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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.