Home / 105,620.42-145,701.66-71,617.40

Finding the Fourth Proportional to 105,620.42, 145,701.66 and 71,617.40

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Solution

The fourth proportional to 105,620.42, 145,701.66 and 71,617.40 is: 98,795.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,620.42 : 145,701.66 = 71,617.40 : x
  2. Step 2: Convert to fraction form
    105,620.42/145,701.66 = 71,617.40/x
  3. Step 3: Cross multiply
    105,620.42x = 145,701.66 × 71,617.40
  4. Step 4: Simplify right side
    105,620.42x = 10,434,774,064.88
  5. Step 5: Solve for x
    x = 10,434,774,064.88/105,620.42
  6. Step 6: Final answer
    x = 98,795.04

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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.