Home / 134,429.60-201,401.40-78,223.70

Finding the Fourth Proportional to 134,429.60, 201,401.40 and 78,223.70

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Solution

The fourth proportional to 134,429.60, 201,401.40 and 78,223.70 is: 117,194.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    134,429.60 : 201,401.40 = 78,223.70 : x
  2. Step 2: Convert to fraction form
    134,429.60/201,401.40 = 78,223.70/x
  3. Step 3: Cross multiply
    134,429.60x = 201,401.40 × 78,223.70
  4. Step 4: Simplify right side
    134,429.60x = 15,754,362,693.18
  5. Step 5: Solve for x
    x = 15,754,362,693.18/134,429.60
  6. Step 6: Final answer
    x = 117,194.15

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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.