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Finding the Fourth Proportional to 108,714.69, 149,887.40 and 70,406.55

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Solution

The fourth proportional to 108,714.69, 149,887.40 and 70,406.55 is: 97,071.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,714.69 : 149,887.40 = 70,406.55 : x
  2. Step 2: Convert to fraction form
    108,714.69/149,887.40 = 70,406.55/x
  3. Step 3: Cross multiply
    108,714.69x = 149,887.40 × 70,406.55
  4. Step 4: Simplify right side
    108,714.69x = 10,553,054,370.44
  5. Step 5: Solve for x
    x = 10,553,054,370.44/108,714.69
  6. Step 6: Final answer
    x = 97,071.10

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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.