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Finding the Fourth Proportional to 121,312.60, 182,001.30 and 108,255.40

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Solution

The fourth proportional to 121,312.60, 182,001.30 and 108,255.40 is: 162,412.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,312.60 : 182,001.30 = 108,255.40 : x
  2. Step 2: Convert to fraction form
    121,312.60/182,001.30 = 108,255.40/x
  3. Step 3: Cross multiply
    121,312.60x = 182,001.30 × 108,255.40
  4. Step 4: Simplify right side
    121,312.60x = 19,702,623,532.02
  5. Step 5: Solve for x
    x = 19,702,623,532.02/121,312.60
  6. Step 6: Final answer
    x = 162,412.01

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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.