Home / 122,376.25-168,889.91-71,405.40

Finding the Fourth Proportional to 122,376.25, 168,889.91 and 71,405.40

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Solution

The fourth proportional to 122,376.25, 168,889.91 and 71,405.40 is: 98,545.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,376.25 : 168,889.91 = 71,405.40 : x
  2. Step 2: Convert to fraction form
    122,376.25/168,889.91 = 71,405.40/x
  3. Step 3: Cross multiply
    122,376.25x = 168,889.91 × 71,405.40
  4. Step 4: Simplify right side
    122,376.25x = 12,059,651,579.51
  5. Step 5: Solve for x
    x = 12,059,651,579.51/122,376.25
  6. Step 6: Final answer
    x = 98,545.69

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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.