Home / 105,664.92-145,823.28-57,920.28

Finding the Fourth Proportional to 105,664.92, 145,823.28 and 57,920.28

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Solution

The fourth proportional to 105,664.92, 145,823.28 and 57,920.28 is: 79,933.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,664.92 : 145,823.28 = 57,920.28 : x
  2. Step 2: Convert to fraction form
    105,664.92/145,823.28 = 57,920.28/x
  3. Step 3: Cross multiply
    105,664.92x = 145,823.28 × 57,920.28
  4. Step 4: Simplify right side
    105,664.92x = 8,446,125,208.12
  5. Step 5: Solve for x
    x = 8,446,125,208.12/105,664.92
  6. Step 6: Final answer
    x = 79,933.11

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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.