Home / 99,985.91-137,984.23-54,666.91

Finding the Fourth Proportional to 99,985.91, 137,984.23 and 54,666.91

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Solution

The fourth proportional to 99,985.91, 137,984.23 and 54,666.91 is: 75,442.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,985.91 : 137,984.23 = 54,666.91 : x
  2. Step 2: Convert to fraction form
    99,985.91/137,984.23 = 54,666.91/x
  3. Step 3: Cross multiply
    99,985.91x = 137,984.23 × 54,666.91
  4. Step 4: Simplify right side
    99,985.91x = 7,543,170,929.58
  5. Step 5: Solve for x
    x = 7,543,170,929.58/99,985.91
  6. Step 6: Final answer
    x = 75,442.34

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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.