Home / 105,228.57-145,213.59-57,480.69

Finding the Fourth Proportional to 105,228.57, 145,213.59 and 57,480.69

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Solution

The fourth proportional to 105,228.57, 145,213.59 and 57,480.69 is: 79,322.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,228.57 : 145,213.59 = 57,480.69 : x
  2. Step 2: Convert to fraction form
    105,228.57/145,213.59 = 57,480.69/x
  3. Step 3: Cross multiply
    105,228.57x = 145,213.59 × 57,480.69
  4. Step 4: Simplify right side
    105,228.57x = 8,346,977,350.58
  5. Step 5: Solve for x
    x = 8,346,977,350.58/105,228.57
  6. Step 6: Final answer
    x = 79,322.35

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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.