Home / 103,065.40-154,420.55-80,567.32

Finding the Fourth Proportional to 103,065.40, 154,420.55 and 80,567.32

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Solution

The fourth proportional to 103,065.40, 154,420.55 and 80,567.32 is: 120,712.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,065.40 : 154,420.55 = 80,567.32 : x
  2. Step 2: Convert to fraction form
    103,065.40/154,420.55 = 80,567.32/x
  3. Step 3: Cross multiply
    103,065.40x = 154,420.55 × 80,567.32
  4. Step 4: Simplify right side
    103,065.40x = 12,441,249,077.54
  5. Step 5: Solve for x
    x = 12,441,249,077.54/103,065.40
  6. Step 6: Final answer
    x = 120,712.18

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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.