Home / 102,181.06-153,136.62-78,397.64

Finding the Fourth Proportional to 102,181.06, 153,136.62 and 78,397.64

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Solution

The fourth proportional to 102,181.06, 153,136.62 and 78,397.64 is: 117,492.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,181.06 : 153,136.62 = 78,397.64 : x
  2. Step 2: Convert to fraction form
    102,181.06/153,136.62 = 78,397.64/x
  3. Step 3: Cross multiply
    102,181.06x = 153,136.62 × 78,397.64
  4. Step 4: Simplify right side
    102,181.06x = 12,005,549,605.58
  5. Step 5: Solve for x
    x = 12,005,549,605.58/102,181.06
  6. Step 6: Final answer
    x = 117,492.91

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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.