Home / 129,652.08-178,953.16-84,442.72

Finding the Fourth Proportional to 129,652.08, 178,953.16 and 84,442.72

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Solution

The fourth proportional to 129,652.08, 178,953.16 and 84,442.72 is: 116,552.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,652.08 : 178,953.16 = 84,442.72 : x
  2. Step 2: Convert to fraction form
    129,652.08/178,953.16 = 84,442.72/x
  3. Step 3: Cross multiply
    129,652.08x = 178,953.16 × 84,442.72
  4. Step 4: Simplify right side
    129,652.08x = 15,111,291,583.00
  5. Step 5: Solve for x
    x = 15,111,291,583.00/129,652.08
  6. Step 6: Final answer
    x = 116,552.64

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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.