Home / 153,423.68-211,711.20-85,435.52

Finding the Fourth Proportional to 153,423.68, 211,711.20 and 85,435.52

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Solution

The fourth proportional to 153,423.68, 211,711.20 and 85,435.52 is: 117,893.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,423.68 : 211,711.20 = 85,435.52 : x
  2. Step 2: Convert to fraction form
    153,423.68/211,711.20 = 85,435.52/x
  3. Step 3: Cross multiply
    153,423.68x = 211,711.20 × 85,435.52
  4. Step 4: Simplify right side
    153,423.68x = 18,087,656,461.82
  5. Step 5: Solve for x
    x = 18,087,656,461.82/153,423.68
  6. Step 6: Final answer
    x = 117,893.51

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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.