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Finding the Fourth Proportional to 128,053.23, 176,731.26 and 71,468.25

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Solution

The fourth proportional to 128,053.23, 176,731.26 and 71,468.25 is: 98,636.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,053.23 : 176,731.26 = 71,468.25 : x
  2. Step 2: Convert to fraction form
    128,053.23/176,731.26 = 71,468.25/x
  3. Step 3: Cross multiply
    128,053.23x = 176,731.26 × 71,468.25
  4. Step 4: Simplify right side
    128,053.23x = 12,630,673,872.50
  5. Step 5: Solve for x
    x = 12,630,673,872.50/128,053.23
  6. Step 6: Final answer
    x = 98,636.12

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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.