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Finding the Fourth Proportional to 93,344.90, 128,447.25 and 84,402.50

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Solution

The fourth proportional to 93,344.90, 128,447.25 and 84,402.50 is: 116,142.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,344.90 : 128,447.25 = 84,402.50 : x
  2. Step 2: Convert to fraction form
    93,344.90/128,447.25 = 84,402.50/x
  3. Step 3: Cross multiply
    93,344.90x = 128,447.25 × 84,402.50
  4. Step 4: Simplify right side
    93,344.90x = 10,841,269,018.13
  5. Step 5: Solve for x
    x = 10,841,269,018.13/93,344.90
  6. Step 6: Final answer
    x = 116,142.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.