Home / 153,023.49-211,168.20-85,038.72

Finding the Fourth Proportional to 153,023.49, 211,168.20 and 85,038.72

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Solution

The fourth proportional to 153,023.49, 211,168.20 and 85,038.72 is: 117,351.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,023.49 : 211,168.20 = 85,038.72 : x
  2. Step 2: Convert to fraction form
    153,023.49/211,168.20 = 85,038.72/x
  3. Step 3: Cross multiply
    153,023.49x = 211,168.20 × 85,038.72
  4. Step 4: Simplify right side
    153,023.49x = 17,957,473,432.70
  5. Step 5: Solve for x
    x = 17,957,473,432.70/153,023.49
  6. Step 6: Final answer
    x = 117,351.09

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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.