Home / 105,620.25-145,755.95-57,875.41

Finding the Fourth Proportional to 105,620.25, 145,755.95 and 57,875.41

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Solution

The fourth proportional to 105,620.25, 145,755.95 and 57,875.41 is: 79,868.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,620.25 : 145,755.95 = 57,875.41 : x
  2. Step 2: Convert to fraction form
    105,620.25/145,755.95 = 57,875.41/x
  3. Step 3: Cross multiply
    105,620.25x = 145,755.95 × 57,875.41
  4. Step 4: Simplify right side
    105,620.25x = 8,435,685,366.19
  5. Step 5: Solve for x
    x = 8,435,685,366.19/105,620.25
  6. Step 6: Final answer
    x = 79,868.07

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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.