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Finding the Fourth Proportional to 157,970.45, 218,014.47 and 93,460.43

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Solution

The fourth proportional to 157,970.45, 218,014.47 and 93,460.43 is: 128,984.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,970.45 : 218,014.47 = 93,460.43 : x
  2. Step 2: Convert to fraction form
    157,970.45/218,014.47 = 93,460.43/x
  3. Step 3: Cross multiply
    157,970.45x = 218,014.47 × 93,460.43
  4. Step 4: Simplify right side
    157,970.45x = 20,375,726,657.46
  5. Step 5: Solve for x
    x = 20,375,726,657.46/157,970.45
  6. Step 6: Final answer
    x = 128,984.42

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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.