Home / 122,087-183,962.41-100,386.50

Finding the Fourth Proportional to 122,087, 183,962.41 and 100,386.50

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Solution

The fourth proportional to 122,087, 183,962.41 and 100,386.50 is: 151,263.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,087 : 183,962.41 = 100,386.50 : x
  2. Step 2: Convert to fraction form
    122,087/183,962.41 = 100,386.50/x
  3. Step 3: Cross multiply
    122,087x = 183,962.41 × 100,386.50
  4. Step 4: Simplify right side
    122,087x = 18,467,341,969.53
  5. Step 5: Solve for x
    x = 18,467,341,969.53/122,087
  6. Step 6: Final answer
    x = 151,263.79

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.