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Finding the Fourth Proportional to 143,622.51, 215,341.21 and 68,740.84

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Solution

The fourth proportional to 143,622.51, 215,341.21 and 68,740.84 is: 103,066.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,622.51 : 215,341.21 = 68,740.84 : x
  2. Step 2: Convert to fraction form
    143,622.51/215,341.21 = 68,740.84/x
  3. Step 3: Cross multiply
    143,622.51x = 215,341.21 × 68,740.84
  4. Step 4: Simplify right side
    143,622.51x = 14,802,735,662.02
  5. Step 5: Solve for x
    x = 14,802,735,662.02/143,622.51
  6. Step 6: Final answer
    x = 103,066.96

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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.