Home / 141,870.70-212,430.61-85,635.64

Finding the Fourth Proportional to 141,870.70, 212,430.61 and 85,635.64

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Solution

The fourth proportional to 141,870.70, 212,430.61 and 85,635.64 is: 128,226.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,870.70 : 212,430.61 = 85,635.64 : x
  2. Step 2: Convert to fraction form
    141,870.70/212,430.61 = 85,635.64/x
  3. Step 3: Cross multiply
    141,870.70x = 212,430.61 × 85,635.64
  4. Step 4: Simplify right side
    141,870.70x = 18,191,630,497.77
  5. Step 5: Solve for x
    x = 18,191,630,497.77/141,870.70
  6. Step 6: Final answer
    x = 128,226.83

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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.