Home / 102,985.16-154,492.35-31,913.38

Finding the Fourth Proportional to 102,985.16, 154,492.35 and 31,913.38

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Solution

The fourth proportional to 102,985.16, 154,492.35 and 31,913.38 is: 47,874.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,985.16 : 154,492.35 = 31,913.38 : x
  2. Step 2: Convert to fraction form
    102,985.16/154,492.35 = 31,913.38/x
  3. Step 3: Cross multiply
    102,985.16x = 154,492.35 × 31,913.38
  4. Step 4: Simplify right side
    102,985.16x = 4,930,373,072.64
  5. Step 5: Solve for x
    x = 4,930,373,072.64/102,985.16
  6. Step 6: Final answer
    x = 47,874.60

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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.