Home / 120,140.35-180,284.63-61,018.45

Finding the Fourth Proportional to 120,140.35, 180,284.63 and 61,018.45

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Solution

The fourth proportional to 120,140.35, 180,284.63 and 61,018.45 is: 91,565.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,140.35 : 180,284.63 = 61,018.45 : x
  2. Step 2: Convert to fraction form
    120,140.35/180,284.63 = 61,018.45/x
  3. Step 3: Cross multiply
    120,140.35x = 180,284.63 × 61,018.45
  4. Step 4: Simplify right side
    120,140.35x = 11,000,687,932.55
  5. Step 5: Solve for x
    x = 11,000,687,932.55/120,140.35
  6. Step 6: Final answer
    x = 91,565.31

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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.