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Finding the Fourth Proportional to 172,156.32, 258,219.90 and 59,807.70

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Solution

The fourth proportional to 172,156.32, 258,219.90 and 59,807.70 is: 89,706.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,156.32 : 258,219.90 = 59,807.70 : x
  2. Step 2: Convert to fraction form
    172,156.32/258,219.90 = 59,807.70/x
  3. Step 3: Cross multiply
    172,156.32x = 258,219.90 × 59,807.70
  4. Step 4: Simplify right side
    172,156.32x = 15,443,538,313.23
  5. Step 5: Solve for x
    x = 15,443,538,313.23/172,156.32
  6. Step 6: Final answer
    x = 89,706.48

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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.