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Finding the Fourth Proportional to 98,127.60, 147,090.60 and 48,130.80

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Solution

The fourth proportional to 98,127.60, 147,090.60 and 48,130.80 is: 72,146.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,127.60 : 147,090.60 = 48,130.80 : x
  2. Step 2: Convert to fraction form
    98,127.60/147,090.60 = 48,130.80/x
  3. Step 3: Cross multiply
    98,127.60x = 147,090.60 × 48,130.80
  4. Step 4: Simplify right side
    98,127.60x = 7,079,588,250.48
  5. Step 5: Solve for x
    x = 7,079,588,250.48/98,127.60
  6. Step 6: Final answer
    x = 72,146.76

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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.