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Finding the Fourth Proportional to 169,541.40, 254,312.10 and 139,992.60

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Solution

The fourth proportional to 169,541.40, 254,312.10 and 139,992.60 is: 209,988.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    169,541.40 : 254,312.10 = 139,992.60 : x
  2. Step 2: Convert to fraction form
    169,541.40/254,312.10 = 139,992.60/x
  3. Step 3: Cross multiply
    169,541.40x = 254,312.10 × 139,992.60
  4. Step 4: Simplify right side
    169,541.40x = 35,601,812,090.46
  5. Step 5: Solve for x
    x = 35,601,812,090.46/169,541.40
  6. Step 6: Final answer
    x = 209,988.90

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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.