Home / 120,389.54-180,598.14-70,470.09

Finding the Fourth Proportional to 120,389.54, 180,598.14 and 70,470.09

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Solution

The fourth proportional to 120,389.54, 180,598.14 and 70,470.09 is: 105,713.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,389.54 : 180,598.14 = 70,470.09 : x
  2. Step 2: Convert to fraction form
    120,389.54/180,598.14 = 70,470.09/x
  3. Step 3: Cross multiply
    120,389.54x = 180,598.14 × 70,470.09
  4. Step 4: Simplify right side
    120,389.54x = 12,726,767,179.63
  5. Step 5: Solve for x
    x = 12,726,767,179.63/120,389.54
  6. Step 6: Final answer
    x = 105,713.23

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.