Home / 113,867.60-170,801.40-78,438.20

Finding the Fourth Proportional to 113,867.60, 170,801.40 and 78,438.20

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Solution

The fourth proportional to 113,867.60, 170,801.40 and 78,438.20 is: 117,657.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,867.60 : 170,801.40 = 78,438.20 : x
  2. Step 2: Convert to fraction form
    113,867.60/170,801.40 = 78,438.20/x
  3. Step 3: Cross multiply
    113,867.60x = 170,801.40 × 78,438.20
  4. Step 4: Simplify right side
    113,867.60x = 13,397,354,373.48
  5. Step 5: Solve for x
    x = 13,397,354,373.48/113,867.60
  6. Step 6: Final answer
    x = 117,657.30

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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.