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Finding the Fourth Proportional to 121,798.49, 182,442.59 and 77,402.39

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Solution

The fourth proportional to 121,798.49, 182,442.59 and 77,402.39 is: 115,941.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,798.49 : 182,442.59 = 77,402.39 : x
  2. Step 2: Convert to fraction form
    121,798.49/182,442.59 = 77,402.39/x
  3. Step 3: Cross multiply
    121,798.49x = 182,442.59 × 77,402.39
  4. Step 4: Simplify right side
    121,798.49x = 14,121,492,116.78
  5. Step 5: Solve for x
    x = 14,121,492,116.78/121,798.49
  6. Step 6: Final answer
    x = 115,941.44

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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.