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Finding the Fourth Proportional to 108,030.60, 161,700.30 and 99,736.20

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Solution

The fourth proportional to 108,030.60, 161,700.30 and 99,736.20 is: 149,285.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,030.60 : 161,700.30 = 99,736.20 : x
  2. Step 2: Convert to fraction form
    108,030.60/161,700.30 = 99,736.20/x
  3. Step 3: Cross multiply
    108,030.60x = 161,700.30 × 99,736.20
  4. Step 4: Simplify right side
    108,030.60x = 16,127,373,460.86
  5. Step 5: Solve for x
    x = 16,127,373,460.86/108,030.60
  6. Step 6: Final answer
    x = 149,285.23

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1.5x scale

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.