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Finding the Fourth Proportional to 121,802.90, 182,445.15 and 101,066.90

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Solution

The fourth proportional to 121,802.90, 182,445.15 and 101,066.90 is: 151,385.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,802.90 : 182,445.15 = 101,066.90 : x
  2. Step 2: Convert to fraction form
    121,802.90/182,445.15 = 101,066.90/x
  3. Step 3: Cross multiply
    121,802.90x = 182,445.15 × 101,066.90
  4. Step 4: Simplify right side
    121,802.90x = 18,439,165,730.54
  5. Step 5: Solve for x
    x = 18,439,165,730.54/121,802.90
  6. Step 6: Final answer
    x = 151,385.28

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1.5x scale

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.