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Finding the Fourth Proportional to 110,457.40, 165,522.26 and 81,130.04

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Solution

The fourth proportional to 110,457.40, 165,522.26 and 81,130.04 is: 121,574.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,457.40 : 165,522.26 = 81,130.04 : x
  2. Step 2: Convert to fraction form
    110,457.40/165,522.26 = 81,130.04/x
  3. Step 3: Cross multiply
    110,457.40x = 165,522.26 × 81,130.04
  4. Step 4: Simplify right side
    110,457.40x = 13,428,827,574.69
  5. Step 5: Solve for x
    x = 13,428,827,574.69/110,457.40
  6. Step 6: Final answer
    x = 121,574.72

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.