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Finding the Fourth Proportional to 161,915.40, 242,829.90 and 56,723.40

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Solution

The fourth proportional to 161,915.40, 242,829.90 and 56,723.40 is: 85,069.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,915.40 : 242,829.90 = 56,723.40 : x
  2. Step 2: Convert to fraction form
    161,915.40/242,829.90 = 56,723.40/x
  3. Step 3: Cross multiply
    161,915.40x = 242,829.90 × 56,723.40
  4. Step 4: Simplify right side
    161,915.40x = 13,774,137,549.66
  5. Step 5: Solve for x
    x = 13,774,137,549.66/161,915.40
  6. Step 6: Final answer
    x = 85,069.97

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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.