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Finding the Fourth Proportional to 159,415.90, 219,811.42 and 119,061.50

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Solution

The fourth proportional to 159,415.90, 219,811.42 and 119,061.50 is: 164,168.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,415.90 : 219,811.42 = 119,061.50 : x
  2. Step 2: Convert to fraction form
    159,415.90/219,811.42 = 119,061.50/x
  3. Step 3: Cross multiply
    159,415.90x = 219,811.42 × 119,061.50
  4. Step 4: Simplify right side
    159,415.90x = 26,171,076,432.10
  5. Step 5: Solve for x
    x = 26,171,076,432.10/159,415.90
  6. Step 6: Final answer
    x = 164,168.55

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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.