Home / 105,104.74-145,043.75-57,357.04

Finding the Fourth Proportional to 105,104.74, 145,043.75 and 57,357.04

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Solution

The fourth proportional to 105,104.74, 145,043.75 and 57,357.04 is: 79,152.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,104.74 : 145,043.75 = 57,357.04 : x
  2. Step 2: Convert to fraction form
    105,104.74/145,043.75 = 57,357.04/x
  3. Step 3: Cross multiply
    105,104.74x = 145,043.75 × 57,357.04
  4. Step 4: Simplify right side
    105,104.74x = 8,319,280,170.50
  5. Step 5: Solve for x
    x = 8,319,280,170.50/105,104.74
  6. Step 6: Final answer
    x = 79,152.28

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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.