Home / 120,133.64-165,748.04-83,834.12

Finding the Fourth Proportional to 120,133.64, 165,748.04 and 83,834.12

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Solution

The fourth proportional to 120,133.64, 165,748.04 and 83,834.12 is: 115,665.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,133.64 : 165,748.04 = 83,834.12 : x
  2. Step 2: Convert to fraction form
    120,133.64/165,748.04 = 83,834.12/x
  3. Step 3: Cross multiply
    120,133.64x = 165,748.04 × 83,834.12
  4. Step 4: Simplify right side
    120,133.64x = 13,895,341,075.12
  5. Step 5: Solve for x
    x = 13,895,341,075.12/120,133.64
  6. Step 6: Final answer
    x = 115,665.70

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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.