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Finding the Fourth Proportional to 115,312.14, 172,985.22 and 36,408.42

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Solution

The fourth proportional to 115,312.14, 172,985.22 and 36,408.42 is: 54,618.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,312.14 : 172,985.22 = 36,408.42 : x
  2. Step 2: Convert to fraction form
    115,312.14/172,985.22 = 36,408.42/x
  3. Step 3: Cross multiply
    115,312.14x = 172,985.22 × 36,408.42
  4. Step 4: Simplify right side
    115,312.14x = 6,298,118,543.55
  5. Step 5: Solve for x
    x = 6,298,118,543.55/115,312.14
  6. Step 6: Final answer
    x = 54,618.00

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1.5x scale

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.