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Finding the Fourth Proportional to 152,026.88, 209,787.03 and 87,485.67

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Solution

The fourth proportional to 152,026.88, 209,787.03 and 87,485.67 is: 120,724.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,026.88 : 209,787.03 = 87,485.67 : x
  2. Step 2: Convert to fraction form
    152,026.88/209,787.03 = 87,485.67/x
  3. Step 3: Cross multiply
    152,026.88x = 209,787.03 × 87,485.67
  4. Step 4: Simplify right side
    152,026.88x = 18,353,358,876.86
  5. Step 5: Solve for x
    x = 18,353,358,876.86/152,026.88
  6. Step 6: Final answer
    x = 120,724.44

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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.