Home / 157,981.43-236,762.54-69,138.20

Finding the Fourth Proportional to 157,981.43, 236,762.54 and 69,138.20

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Solution

The fourth proportional to 157,981.43, 236,762.54 and 69,138.20 is: 103,615.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,981.43 : 236,762.54 = 69,138.20 : x
  2. Step 2: Convert to fraction form
    157,981.43/236,762.54 = 69,138.20/x
  3. Step 3: Cross multiply
    157,981.43x = 236,762.54 × 69,138.20
  4. Step 4: Simplify right side
    157,981.43x = 16,369,334,659.22
  5. Step 5: Solve for x
    x = 16,369,334,659.22/157,981.43
  6. Step 6: Final answer
    x = 103,615.57

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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.