Home / 153,823.30-212,276.63-85,843.15

Finding the Fourth Proportional to 153,823.30, 212,276.63 and 85,843.15

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Solution

The fourth proportional to 153,823.30, 212,276.63 and 85,843.15 is: 118,463.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,823.30 : 212,276.63 = 85,843.15 : x
  2. Step 2: Convert to fraction form
    153,823.30/212,276.63 = 85,843.15/x
  3. Step 3: Cross multiply
    153,823.30x = 212,276.63 × 85,843.15
  4. Step 4: Simplify right side
    153,823.30x = 18,222,494,590.58
  5. Step 5: Solve for x
    x = 18,222,494,590.58/153,823.30
  6. Step 6: Final answer
    x = 118,463.81

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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.