Home / 157,254.90-217,085.31-100,698.54

Finding the Fourth Proportional to 157,254.90, 217,085.31 and 100,698.54

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Solution

The fourth proportional to 157,254.90, 217,085.31 and 100,698.54 is: 139,011.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,254.90 : 217,085.31 = 100,698.54 : x
  2. Step 2: Convert to fraction form
    157,254.90/217,085.31 = 100,698.54/x
  3. Step 3: Cross multiply
    157,254.90x = 217,085.31 × 100,698.54
  4. Step 4: Simplify right side
    157,254.90x = 21,860,173,772.45
  5. Step 5: Solve for x
    x = 21,860,173,772.45/157,254.90
  6. Step 6: Final answer
    x = 139,011.08

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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.