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Finding the Fourth Proportional to 161,781.40, 242,672.10 and 56,586.70

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Solution

The fourth proportional to 161,781.40, 242,672.10 and 56,586.70 is: 84,880.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,781.40 : 242,672.10 = 56,586.70 : x
  2. Step 2: Convert to fraction form
    161,781.40/242,672.10 = 56,586.70/x
  3. Step 3: Cross multiply
    161,781.40x = 242,672.10 × 56,586.70
  4. Step 4: Simplify right side
    161,781.40x = 13,732,013,321.07
  5. Step 5: Solve for x
    x = 13,732,013,321.07/161,781.40
  6. Step 6: Final answer
    x = 84,880.05

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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.