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Finding the Fourth Proportional to 153,073.85, 211,276.17 and 85,114.67

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Solution

The fourth proportional to 153,073.85, 211,276.17 and 85,114.67 is: 117,477.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,073.85 : 211,276.17 = 85,114.67 : x
  2. Step 2: Convert to fraction form
    153,073.85/211,276.17 = 85,114.67/x
  3. Step 3: Cross multiply
    153,073.85x = 211,276.17 × 85,114.67
  4. Step 4: Simplify right side
    153,073.85x = 17,982,700,432.03
  5. Step 5: Solve for x
    x = 17,982,700,432.03/153,073.85
  6. Step 6: Final answer
    x = 117,477.29

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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.