Home / 130,901.48-180,638.90-79,999.46

Finding the Fourth Proportional to 130,901.48, 180,638.90 and 79,999.46

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Solution

The fourth proportional to 130,901.48, 180,638.90 and 79,999.46 is: 110,396.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    130,901.48 : 180,638.90 = 79,999.46 : x
  2. Step 2: Convert to fraction form
    130,901.48/180,638.90 = 79,999.46/x
  3. Step 3: Cross multiply
    130,901.48x = 180,638.90 × 79,999.46
  4. Step 4: Simplify right side
    130,901.48x = 14,451,014,454.99
  5. Step 5: Solve for x
    x = 14,451,014,454.99/130,901.48
  6. Step 6: Final answer
    x = 110,396.11

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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.