Home / 212,328.90-293,017.14-121,692.78

Finding the Fourth Proportional to 212,328.90, 293,017.14 and 121,692.78

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Solution

The fourth proportional to 212,328.90, 293,017.14 and 121,692.78 is: 167,937.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,328.90 : 293,017.14 = 121,692.78 : x
  2. Step 2: Convert to fraction form
    212,328.90/293,017.14 = 121,692.78/x
  3. Step 3: Cross multiply
    212,328.90x = 293,017.14 × 121,692.78
  4. Step 4: Simplify right side
    212,328.90x = 35,658,070,354.25
  5. Step 5: Solve for x
    x = 35,658,070,354.25/212,328.90
  6. Step 6: Final answer
    x = 167,937.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.