Home / 105,730.13-145,914.23-57,983.50

Finding the Fourth Proportional to 105,730.13, 145,914.23 and 57,983.50

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Solution

The fourth proportional to 105,730.13, 145,914.23 and 57,983.50 is: 80,020.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,730.13 : 145,914.23 = 57,983.50 : x
  2. Step 2: Convert to fraction form
    105,730.13/145,914.23 = 57,983.50/x
  3. Step 3: Cross multiply
    105,730.13x = 145,914.23 × 57,983.50
  4. Step 4: Simplify right side
    105,730.13x = 8,460,617,755.21
  5. Step 5: Solve for x
    x = 8,460,617,755.21/105,730.13
  6. Step 6: Final answer
    x = 80,020.88

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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.