Home / 172,415.18-237,897.30-100,781.35

Finding the Fourth Proportional to 172,415.18, 237,897.30 and 100,781.35

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Solution

The fourth proportional to 172,415.18, 237,897.30 and 100,781.35 is: 139,057.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,415.18 : 237,897.30 = 100,781.35 : x
  2. Step 2: Convert to fraction form
    172,415.18/237,897.30 = 100,781.35/x
  3. Step 3: Cross multiply
    172,415.18x = 237,897.30 × 100,781.35
  4. Step 4: Simplify right side
    172,415.18x = 23,975,610,838.54
  5. Step 5: Solve for x
    x = 23,975,610,838.54/172,415.18
  6. Step 6: Final answer
    x = 139,057.42

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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.