Home / 105,651.10-145,802.21-57,904.44

Finding the Fourth Proportional to 105,651.10, 145,802.21 and 57,904.44

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Solution

The fourth proportional to 105,651.10, 145,802.21 and 57,904.44 is: 79,910.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,651.10 : 145,802.21 = 57,904.44 : x
  2. Step 2: Convert to fraction form
    105,651.10/145,802.21 = 57,904.44/x
  3. Step 3: Cross multiply
    105,651.10x = 145,802.21 × 57,904.44
  4. Step 4: Simplify right side
    105,651.10x = 8,442,595,320.81
  5. Step 5: Solve for x
    x = 8,442,595,320.81/105,651.10
  6. Step 6: Final answer
    x = 79,910.15

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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.