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Finding the Fourth Proportional to 143,607.80, 215,411.70 and 113,864.60

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Solution

The fourth proportional to 143,607.80, 215,411.70 and 113,864.60 is: 170,796.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,607.80 : 215,411.70 = 113,864.60 : x
  2. Step 2: Convert to fraction form
    143,607.80/215,411.70 = 113,864.60/x
  3. Step 3: Cross multiply
    143,607.80x = 215,411.70 × 113,864.60
  4. Step 4: Simplify right side
    143,607.80x = 24,527,767,055.82
  5. Step 5: Solve for x
    x = 24,527,767,055.82/143,607.80
  6. Step 6: Final answer
    x = 170,796.90

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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.