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Finding the Fourth Proportional to 108,755.96, 150,090.12 and 61,012.40

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Solution

The fourth proportional to 108,755.96, 150,090.12 and 61,012.40 is: 84,200.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,755.96 : 150,090.12 = 61,012.40 : x
  2. Step 2: Convert to fraction form
    108,755.96/150,090.12 = 61,012.40/x
  3. Step 3: Cross multiply
    108,755.96x = 150,090.12 × 61,012.40
  4. Step 4: Simplify right side
    108,755.96x = 9,157,358,437.49
  5. Step 5: Solve for x
    x = 9,157,358,437.49/108,755.96
  6. Step 6: Final answer
    x = 84,200.98

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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.