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Finding the Fourth Proportional to 122,949.68, 184,128.88 and 70,199.28

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Solution

The fourth proportional to 122,949.68, 184,128.88 and 70,199.28 is: 105,130.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,949.68 : 184,128.88 = 70,199.28 : x
  2. Step 2: Convert to fraction form
    122,949.68/184,128.88 = 70,199.28/x
  3. Step 3: Cross multiply
    122,949.68x = 184,128.88 × 70,199.28
  4. Step 4: Simplify right side
    122,949.68x = 12,925,714,803.21
  5. Step 5: Solve for x
    x = 12,925,714,803.21/122,949.68
  6. Step 6: Final answer
    x = 105,130.12

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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.