Home / 105,626.16-145,765.56-57,878.64

Finding the Fourth Proportional to 105,626.16, 145,765.56 and 57,878.64

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Solution

The fourth proportional to 105,626.16, 145,765.56 and 57,878.64 is: 79,873.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,626.16 : 145,765.56 = 57,878.64 : x
  2. Step 2: Convert to fraction form
    105,626.16/145,765.56 = 57,878.64/x
  3. Step 3: Cross multiply
    105,626.16x = 145,765.56 × 57,878.64
  4. Step 4: Simplify right side
    105,626.16x = 8,436,712,371.64
  5. Step 5: Solve for x
    x = 8,436,712,371.64/105,626.16
  6. Step 6: Final answer
    x = 79,873.32

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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.