Home / 153,278.02-211,505.10-85,278.94

Finding the Fourth Proportional to 153,278.02, 211,505.10 and 85,278.94

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Solution

The fourth proportional to 153,278.02, 211,505.10 and 85,278.94 is: 117,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,278.02 : 211,505.10 = 85,278.94 : x
  2. Step 2: Convert to fraction form
    153,278.02/211,505.10 = 85,278.94/x
  3. Step 3: Cross multiply
    153,278.02x = 211,505.10 × 85,278.94
  4. Step 4: Simplify right side
    153,278.02x = 18,036,930,732.59
  5. Step 5: Solve for x
    x = 18,036,930,732.59/153,278.02
  6. Step 6: Final answer
    x = 117,674.61

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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.