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Finding the Fourth Proportional to 152,697.60, 210,723.96 and 84,719.04

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Solution

The fourth proportional to 152,697.60, 210,723.96 and 84,719.04 is: 116,912.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,697.60 : 210,723.96 = 84,719.04 : x
  2. Step 2: Convert to fraction form
    152,697.60/210,723.96 = 84,719.04/x
  3. Step 3: Cross multiply
    152,697.60x = 210,723.96 × 84,719.04
  4. Step 4: Simplify right side
    152,697.60x = 17,852,331,596.20
  5. Step 5: Solve for x
    x = 17,852,331,596.20/152,697.60
  6. Step 6: Final answer
    x = 116,912.98

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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.