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Finding the Fourth Proportional to 104,970.60, 144,859.50 and 57,223.98

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Solution

The fourth proportional to 104,970.60, 144,859.50 and 57,223.98 is: 78,969.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,970.60 : 144,859.50 = 57,223.98 : x
  2. Step 2: Convert to fraction form
    104,970.60/144,859.50 = 57,223.98/x
  3. Step 3: Cross multiply
    104,970.60x = 144,859.50 × 57,223.98
  4. Step 4: Simplify right side
    104,970.60x = 8,289,437,130.81
  5. Step 5: Solve for x
    x = 8,289,437,130.81/104,970.60
  6. Step 6: Final answer
    x = 78,969.13

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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.