Home / 153,269.15-211,511.40-85,290.50

Finding the Fourth Proportional to 153,269.15, 211,511.40 and 85,290.50

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Solution

The fourth proportional to 153,269.15, 211,511.40 and 85,290.50 is: 117,700.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,269.15 : 211,511.40 = 85,290.50 : x
  2. Step 2: Convert to fraction form
    153,269.15/211,511.40 = 85,290.50/x
  3. Step 3: Cross multiply
    153,269.15x = 211,511.40 × 85,290.50
  4. Step 4: Simplify right side
    153,269.15x = 18,039,912,004.14
  5. Step 5: Solve for x
    x = 18,039,912,004.14/153,269.15
  6. Step 6: Final answer
    x = 117,700.87

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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.