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Finding the Fourth Proportional to 163,313.20, 244,969.80 and 139,985.20

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Solution

The fourth proportional to 163,313.20, 244,969.80 and 139,985.20 is: 209,977.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,313.20 : 244,969.80 = 139,985.20 : x
  2. Step 2: Convert to fraction form
    163,313.20/244,969.80 = 139,985.20/x
  3. Step 3: Cross multiply
    163,313.20x = 244,969.80 × 139,985.20
  4. Step 4: Simplify right side
    163,313.20x = 34,292,146,446.96
  5. Step 5: Solve for x
    x = 34,292,146,446.96/163,313.20
  6. Step 6: Final answer
    x = 209,977.80

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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.