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Finding the Fourth Proportional to 157,085.60, 235,628.40 and 125,981.60

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Solution

The fourth proportional to 157,085.60, 235,628.40 and 125,981.60 is: 188,972.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,085.60 : 235,628.40 = 125,981.60 : x
  2. Step 2: Convert to fraction form
    157,085.60/235,628.40 = 125,981.60/x
  3. Step 3: Cross multiply
    157,085.60x = 235,628.40 × 125,981.60
  4. Step 4: Simplify right side
    157,085.60x = 29,684,842,837.44
  5. Step 5: Solve for x
    x = 29,684,842,837.44/157,085.60
  6. Step 6: Final answer
    x = 188,972.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.