Home / 122,539.49-183,698.43-85,117.15

Finding the Fourth Proportional to 122,539.49, 183,698.43 and 85,117.15

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Solution

The fourth proportional to 122,539.49, 183,698.43 and 85,117.15 is: 127,598.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,539.49 : 183,698.43 = 85,117.15 : x
  2. Step 2: Convert to fraction form
    122,539.49/183,698.43 = 85,117.15/x
  3. Step 3: Cross multiply
    122,539.49x = 183,698.43 × 85,117.15
  4. Step 4: Simplify right side
    122,539.49x = 15,635,886,821.07
  5. Step 5: Solve for x
    x = 15,635,886,821.07/122,539.49
  6. Step 6: Final answer
    x = 127,598.76

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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.