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Finding the Fourth Proportional to 152,620.68, 210,682.34 and 143,056.20

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Solution

The fourth proportional to 152,620.68, 210,682.34 and 143,056.20 is: 197,479.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,620.68 : 210,682.34 = 143,056.20 : x
  2. Step 2: Convert to fraction form
    152,620.68/210,682.34 = 143,056.20/x
  3. Step 3: Cross multiply
    152,620.68x = 210,682.34 × 143,056.20
  4. Step 4: Simplify right side
    152,620.68x = 30,139,414,967.51
  5. Step 5: Solve for x
    x = 30,139,414,967.51/152,620.68
  6. Step 6: Final answer
    x = 197,479.23

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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.