Home / 285,787.32-428,681.07-105,934.59

Finding the Fourth Proportional to 285,787.32, 428,681.07 and 105,934.59

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Solution

The fourth proportional to 285,787.32, 428,681.07 and 105,934.59 is: 158,901.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,787.32 : 428,681.07 = 105,934.59 : x
  2. Step 2: Convert to fraction form
    285,787.32/428,681.07 = 105,934.59/x
  3. Step 3: Cross multiply
    285,787.32x = 428,681.07 × 105,934.59
  4. Step 4: Simplify right side
    285,787.32x = 45,412,153,391.21
  5. Step 5: Solve for x
    x = 45,412,153,391.21/285,787.32
  6. Step 6: Final answer
    x = 158,901.92

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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.