Home / 113,433.60-170,150.40-78,004.20

Finding the Fourth Proportional to 113,433.60, 170,150.40 and 78,004.20

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Solution

The fourth proportional to 113,433.60, 170,150.40 and 78,004.20 is: 117,006.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,433.60 : 170,150.40 = 78,004.20 : x
  2. Step 2: Convert to fraction form
    113,433.60/170,150.40 = 78,004.20/x
  3. Step 3: Cross multiply
    113,433.60x = 170,150.40 × 78,004.20
  4. Step 4: Simplify right side
    113,433.60x = 13,272,445,831.68
  5. Step 5: Solve for x
    x = 13,272,445,831.68/113,433.60
  6. Step 6: Final answer
    x = 117,006.30

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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.