Home / 120,048.04-165,468.72-85,134.34

Finding the Fourth Proportional to 120,048.04, 165,468.72 and 85,134.34

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Solution

The fourth proportional to 120,048.04, 165,468.72 and 85,134.34 is: 117,345.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,048.04 : 165,468.72 = 85,134.34 : x
  2. Step 2: Convert to fraction form
    120,048.04/165,468.72 = 85,134.34/x
  3. Step 3: Cross multiply
    120,048.04x = 165,468.72 × 85,134.34
  4. Step 4: Simplify right side
    120,048.04x = 14,087,070,267.84
  5. Step 5: Solve for x
    x = 14,087,070,267.84/120,048.04
  6. Step 6: Final answer
    x = 117,345.28

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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.