Home / 108,428.07-162,543.68-80,314.18

Finding the Fourth Proportional to 108,428.07, 162,543.68 and 80,314.18

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Solution

The fourth proportional to 108,428.07, 162,543.68 and 80,314.18 is: 120,398.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,428.07 : 162,543.68 = 80,314.18 : x
  2. Step 2: Convert to fraction form
    108,428.07/162,543.68 = 80,314.18/x
  3. Step 3: Cross multiply
    108,428.07x = 162,543.68 × 80,314.18
  4. Step 4: Simplify right side
    108,428.07x = 13,054,562,574.17
  5. Step 5: Solve for x
    x = 13,054,562,574.17/108,428.07
  6. Step 6: Final answer
    x = 120,398.37

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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.