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Finding the Fourth Proportional to 172,719.36, 258,967.76 and 72,852.84

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Solution

The fourth proportional to 172,719.36, 258,967.76 and 72,852.84 is: 109,232.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,719.36 : 258,967.76 = 72,852.84 : x
  2. Step 2: Convert to fraction form
    172,719.36/258,967.76 = 72,852.84/x
  3. Step 3: Cross multiply
    172,719.36x = 258,967.76 × 72,852.84
  4. Step 4: Simplify right side
    172,719.36x = 18,866,536,420.17
  5. Step 5: Solve for x
    x = 18,866,536,420.17/172,719.36
  6. Step 6: Final answer
    x = 109,232.32

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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.