Home / 155,437.80-233,156.70-121,612.20

Finding the Fourth Proportional to 155,437.80, 233,156.70 and 121,612.20

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Solution

The fourth proportional to 155,437.80, 233,156.70 and 121,612.20 is: 182,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,437.80 : 233,156.70 = 121,612.20 : x
  2. Step 2: Convert to fraction form
    155,437.80/233,156.70 = 121,612.20/x
  3. Step 3: Cross multiply
    155,437.80x = 233,156.70 × 121,612.20
  4. Step 4: Simplify right side
    155,437.80x = 28,354,699,231.74
  5. Step 5: Solve for x
    x = 28,354,699,231.74/155,437.80
  6. Step 6: Final answer
    x = 182,418.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.