Home / 113,317.40-170,040.90-78,282.20

Finding the Fourth Proportional to 113,317.40, 170,040.90 and 78,282.20

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Solution

The fourth proportional to 113,317.40, 170,040.90 and 78,282.20 is: 117,468.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,317.40 : 170,040.90 = 78,282.20 : x
  2. Step 2: Convert to fraction form
    113,317.40/170,040.90 = 78,282.20/x
  3. Step 3: Cross multiply
    113,317.40x = 170,040.90 × 78,282.20
  4. Step 4: Simplify right side
    113,317.40x = 13,311,175,741.98
  5. Step 5: Solve for x
    x = 13,311,175,741.98/113,317.40
  6. Step 6: Final answer
    x = 117,468.07

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1.5x scale

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.