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Finding the Fourth Proportional to 108,840.83, 150,231.65 and 65,820.38

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Solution

The fourth proportional to 108,840.83, 150,231.65 and 65,820.38 is: 90,851.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,840.83 : 150,231.65 = 65,820.38 : x
  2. Step 2: Convert to fraction form
    108,840.83/150,231.65 = 65,820.38/x
  3. Step 3: Cross multiply
    108,840.83x = 150,231.65 × 65,820.38
  4. Step 4: Simplify right side
    108,840.83x = 9,888,303,210.77
  5. Step 5: Solve for x
    x = 9,888,303,210.77/108,840.83
  6. Step 6: Final answer
    x = 90,851.05

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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.