Home / 153,933.32-212,368.02-103,665.80

Finding the Fourth Proportional to 153,933.32, 212,368.02 and 103,665.80

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Solution

The fourth proportional to 153,933.32, 212,368.02 and 103,665.80 is: 143,018.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,933.32 : 212,368.02 = 103,665.80 : x
  2. Step 2: Convert to fraction form
    153,933.32/212,368.02 = 103,665.80/x
  3. Step 3: Cross multiply
    153,933.32x = 212,368.02 × 103,665.80
  4. Step 4: Simplify right side
    153,933.32x = 22,015,300,687.72
  5. Step 5: Solve for x
    x = 22,015,300,687.72/153,933.32
  6. Step 6: Final answer
    x = 143,018.42

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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.