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Finding the Fourth Proportional to 161,805.95, 242,518.29 and 72,955.43

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Solution

The fourth proportional to 161,805.95, 242,518.29 and 72,955.43 is: 109,347.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    161,805.95 : 242,518.29 = 72,955.43 : x
  2. Step 2: Convert to fraction form
    161,805.95/242,518.29 = 72,955.43/x
  3. Step 3: Cross multiply
    161,805.95x = 242,518.29 × 72,955.43
  4. Step 4: Simplify right side
    161,805.95x = 17,693,024,917.22
  5. Step 5: Solve for x
    x = 17,693,024,917.22/161,805.95
  6. Step 6: Final answer
    x = 109,347.19

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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.