Home / 103,243.60-142,467.54-57,915.28

Finding the Fourth Proportional to 103,243.60, 142,467.54 and 57,915.28

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Solution

The fourth proportional to 103,243.60, 142,467.54 and 57,915.28 is: 79,918.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,243.60 : 142,467.54 = 57,915.28 : x
  2. Step 2: Convert to fraction form
    103,243.60/142,467.54 = 57,915.28/x
  3. Step 3: Cross multiply
    103,243.60x = 142,467.54 × 57,915.28
  4. Step 4: Simplify right side
    103,243.60x = 8,251,047,470.01
  5. Step 5: Solve for x
    x = 8,251,047,470.01/103,243.60
  6. Step 6: Final answer
    x = 79,918.25

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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.