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Finding the Fourth Proportional to 161,808.40, 242,647.80 and 56,573.20

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Solution

The fourth proportional to 161,808.40, 242,647.80 and 56,573.20 is: 84,837.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,808.40 : 242,647.80 = 56,573.20 : x
  2. Step 2: Convert to fraction form
    161,808.40/242,647.80 = 56,573.20/x
  3. Step 3: Cross multiply
    161,808.40x = 242,647.80 × 56,573.20
  4. Step 4: Simplify right side
    161,808.40x = 13,727,362,518.96
  5. Step 5: Solve for x
    x = 13,727,362,518.96/161,808.40
  6. Step 6: Final answer
    x = 84,837.14

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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.