Home / 129,986.50-179,381.37-70,370.50

Finding the Fourth Proportional to 129,986.50, 179,381.37 and 70,370.50

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Solution

The fourth proportional to 129,986.50, 179,381.37 and 70,370.50 is: 97,111.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,986.50 : 179,381.37 = 70,370.50 : x
  2. Step 2: Convert to fraction form
    129,986.50/179,381.37 = 70,370.50/x
  3. Step 3: Cross multiply
    129,986.50x = 179,381.37 × 70,370.50
  4. Step 4: Simplify right side
    129,986.50x = 12,623,156,697.59
  5. Step 5: Solve for x
    x = 12,623,156,697.59/129,986.50
  6. Step 6: Final answer
    x = 97,111.29

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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.