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Finding the Fourth Proportional to 84,170.30, 116,308.96 and 80,070.08

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Solution

The fourth proportional to 84,170.30, 116,308.96 and 80,070.08 is: 110,643.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,170.30 : 116,308.96 = 80,070.08 : x
  2. Step 2: Convert to fraction form
    84,170.30/116,308.96 = 80,070.08/x
  3. Step 3: Cross multiply
    84,170.30x = 116,308.96 × 80,070.08
  4. Step 4: Simplify right side
    84,170.30x = 9,312,867,731.92
  5. Step 5: Solve for x
    x = 9,312,867,731.92/84,170.30
  6. Step 6: Final answer
    x = 110,643.16

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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.