Home / 153,340.20-211,622.76-85,381.20

Finding the Fourth Proportional to 153,340.20, 211,622.76 and 85,381.20

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Solution

The fourth proportional to 153,340.20, 211,622.76 and 85,381.20 is: 117,833.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,340.20 : 211,622.76 = 85,381.20 : x
  2. Step 2: Convert to fraction form
    153,340.20/211,622.76 = 85,381.20/x
  3. Step 3: Cross multiply
    153,340.20x = 211,622.76 × 85,381.20
  4. Step 4: Simplify right side
    153,340.20x = 18,068,605,196.11
  5. Step 5: Solve for x
    x = 18,068,605,196.11/153,340.20
  6. Step 6: Final answer
    x = 117,833.45

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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.