Home / 134,941.50-186,235.70-78,352.88

Finding the Fourth Proportional to 134,941.50, 186,235.70 and 78,352.88

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Solution

The fourth proportional to 134,941.50, 186,235.70 and 78,352.88 is: 108,136.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,941.50 : 186,235.70 = 78,352.88 : x
  2. Step 2: Convert to fraction form
    134,941.50/186,235.70 = 78,352.88/x
  3. Step 3: Cross multiply
    134,941.50x = 186,235.70 × 78,352.88
  4. Step 4: Simplify right side
    134,941.50x = 14,592,102,130.87
  5. Step 5: Solve for x
    x = 14,592,102,130.87/134,941.50
  6. Step 6: Final answer
    x = 108,136.50

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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.