Home / 209,455.15-314,143.70-67,302.89

Finding the Fourth Proportional to 209,455.15, 314,143.70 and 67,302.89

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Solution

The fourth proportional to 209,455.15, 314,143.70 and 67,302.89 is: 100,941.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,455.15 : 314,143.70 = 67,302.89 : x
  2. Step 2: Convert to fraction form
    209,455.15/314,143.70 = 67,302.89/x
  3. Step 3: Cross multiply
    209,455.15x = 314,143.70 × 67,302.89
  4. Step 4: Simplify right side
    209,455.15x = 21,142,778,885.29
  5. Step 5: Solve for x
    x = 21,142,778,885.29/209,455.15
  6. Step 6: Final answer
    x = 100,941.80

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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.