Home / 154,208.48-212,779.92-86,226.80

Finding the Fourth Proportional to 154,208.48, 212,779.92 and 86,226.80

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Solution

The fourth proportional to 154,208.48, 212,779.92 and 86,226.80 is: 118,977.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,208.48 : 212,779.92 = 86,226.80 : x
  2. Step 2: Convert to fraction form
    154,208.48/212,779.92 = 86,226.80/x
  3. Step 3: Cross multiply
    154,208.48x = 212,779.92 × 86,226.80
  4. Step 4: Simplify right side
    154,208.48x = 18,347,331,605.86
  5. Step 5: Solve for x
    x = 18,347,331,605.86/154,208.48
  6. Step 6: Final answer
    x = 118,977.45

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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.