Home / 105,240.07-145,223.67-57,483.28

Finding the Fourth Proportional to 105,240.07, 145,223.67 and 57,483.28

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Solution

The fourth proportional to 105,240.07, 145,223.67 and 57,483.28 is: 79,322.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,240.07 : 145,223.67 = 57,483.28 : x
  2. Step 2: Convert to fraction form
    105,240.07/145,223.67 = 57,483.28/x
  3. Step 3: Cross multiply
    105,240.07x = 145,223.67 × 57,483.28
  4. Step 4: Simplify right side
    105,240.07x = 8,347,932,885.24
  5. Step 5: Solve for x
    x = 8,347,932,885.24/105,240.07
  6. Step 6: Final answer
    x = 79,322.76

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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.