Home / 135,237.60-186,089.81-131,128.74

Finding the Fourth Proportional to 135,237.60, 186,089.81 and 131,128.74

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Solution

The fourth proportional to 135,237.60, 186,089.81 and 131,128.74 is: 180,435.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,237.60 : 186,089.81 = 131,128.74 : x
  2. Step 2: Convert to fraction form
    135,237.60/186,089.81 = 131,128.74/x
  3. Step 3: Cross multiply
    135,237.60x = 186,089.81 × 131,128.74
  4. Step 4: Simplify right side
    135,237.60x = 24,401,721,656.50
  5. Step 5: Solve for x
    x = 24,401,721,656.50/135,237.60
  6. Step 6: Final answer
    x = 180,435.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.