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Finding the Fourth Proportional to 215,712.12, 297,683.64 and 118,913.90

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Solution

The fourth proportional to 215,712.12, 297,683.64 and 118,913.90 is: 164,101.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,712.12 : 297,683.64 = 118,913.90 : x
  2. Step 2: Convert to fraction form
    215,712.12/297,683.64 = 118,913.90/x
  3. Step 3: Cross multiply
    215,712.12x = 297,683.64 × 118,913.90
  4. Step 4: Simplify right side
    215,712.12x = 35,398,722,598.60
  5. Step 5: Solve for x
    x = 35,398,722,598.60/215,712.12
  6. Step 6: Final answer
    x = 164,101.69

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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.