Home / 90,854.15-136,117.20-74,123.60

Finding the Fourth Proportional to 90,854.15, 136,117.20 and 74,123.60

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Solution

The fourth proportional to 90,854.15, 136,117.20 and 74,123.60 is: 111,051.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,854.15 : 136,117.20 = 74,123.60 : x
  2. Step 2: Convert to fraction form
    90,854.15/136,117.20 = 74,123.60/x
  3. Step 3: Cross multiply
    90,854.15x = 136,117.20 × 74,123.60
  4. Step 4: Simplify right side
    90,854.15x = 10,089,496,885.92
  5. Step 5: Solve for x
    x = 10,089,496,885.92/90,854.15
  6. Step 6: Final answer
    x = 111,051.58

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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.