Home / 105,018.24-144,920.80-57,270.72

Finding the Fourth Proportional to 105,018.24, 144,920.80 and 57,270.72

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Solution

The fourth proportional to 105,018.24, 144,920.80 and 57,270.72 is: 79,031.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,018.24 : 144,920.80 = 57,270.72 : x
  2. Step 2: Convert to fraction form
    105,018.24/144,920.80 = 57,270.72/x
  3. Step 3: Cross multiply
    105,018.24x = 144,920.80 × 57,270.72
  4. Step 4: Simplify right side
    105,018.24x = 8,299,718,558.98
  5. Step 5: Solve for x
    x = 8,299,718,558.98/105,018.24
  6. Step 6: Final answer
    x = 79,031.21

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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.