Home / 105,247.29-145,243.35-57,503.60

Finding the Fourth Proportional to 105,247.29, 145,243.35 and 57,503.60

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Solution

The fourth proportional to 105,247.29, 145,243.35 and 57,503.60 is: 79,356.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,247.29 : 145,243.35 = 57,503.60 : x
  2. Step 2: Convert to fraction form
    105,247.29/145,243.35 = 57,503.60/x
  3. Step 3: Cross multiply
    105,247.29x = 145,243.35 × 57,503.60
  4. Step 4: Simplify right side
    105,247.29x = 8,352,014,774.84
  5. Step 5: Solve for x
    x = 8,352,014,774.84/105,247.29
  6. Step 6: Final answer
    x = 79,356.10

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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.