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Finding the Fourth Proportional to 172,683.40, 258,506.70 and 102,526.60

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Solution

The fourth proportional to 172,683.40, 258,506.70 and 102,526.60 is: 153,482.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,683.40 : 258,506.70 = 102,526.60 : x
  2. Step 2: Convert to fraction form
    172,683.40/258,506.70 = 102,526.60/x
  3. Step 3: Cross multiply
    172,683.40x = 258,506.70 × 102,526.60
  4. Step 4: Simplify right side
    172,683.40x = 26,503,813,028.22
  5. Step 5: Solve for x
    x = 26,503,813,028.22/172,683.40
  6. Step 6: Final answer
    x = 153,482.11

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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.