Home / 105,484.19-145,568.34-57,740.56

Finding the Fourth Proportional to 105,484.19, 145,568.34 and 57,740.56

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Solution

The fourth proportional to 105,484.19, 145,568.34 and 57,740.56 is: 79,682.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,484.19 : 145,568.34 = 57,740.56 : x
  2. Step 2: Convert to fraction form
    105,484.19/145,568.34 = 57,740.56/x
  3. Step 3: Cross multiply
    105,484.19x = 145,568.34 × 57,740.56
  4. Step 4: Simplify right side
    105,484.19x = 8,405,196,742.03
  5. Step 5: Solve for x
    x = 8,405,196,742.03/105,484.19
  6. Step 6: Final answer
    x = 79,682.05

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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.