Home / 120,085.59-180,069.61-70,178.25

Finding the Fourth Proportional to 120,085.59, 180,069.61 and 70,178.25

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Solution

The fourth proportional to 120,085.59, 180,069.61 and 70,178.25 is: 105,233.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,085.59 : 180,069.61 = 70,178.25 : x
  2. Step 2: Convert to fraction form
    120,085.59/180,069.61 = 70,178.25/x
  3. Step 3: Cross multiply
    120,085.59x = 180,069.61 × 70,178.25
  4. Step 4: Simplify right side
    120,085.59x = 12,636,969,529.11
  5. Step 5: Solve for x
    x = 12,636,969,529.11/120,085.59
  6. Step 6: Final answer
    x = 105,233.02

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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.