Home / 153,156.92-211,356.68-85,172.40

Finding the Fourth Proportional to 153,156.92, 211,356.68 and 85,172.40

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Solution

The fourth proportional to 153,156.92, 211,356.68 and 85,172.40 is: 117,537.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,156.92 : 211,356.68 = 85,172.40 : x
  2. Step 2: Convert to fraction form
    153,156.92/211,356.68 = 85,172.40/x
  3. Step 3: Cross multiply
    153,156.92x = 211,356.68 × 85,172.40
  4. Step 4: Simplify right side
    153,156.92x = 18,001,755,265.77
  5. Step 5: Solve for x
    x = 18,001,755,265.77/153,156.92
  6. Step 6: Final answer
    x = 117,537.99

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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.