Home / 120,071.04-180,106.57-45,207.98

Finding the Fourth Proportional to 120,071.04, 180,106.57 and 45,207.98

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Solution

The fourth proportional to 120,071.04, 180,106.57 and 45,207.98 is: 67,811.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,071.04 : 180,106.57 = 45,207.98 : x
  2. Step 2: Convert to fraction form
    120,071.04/180,106.57 = 45,207.98/x
  3. Step 3: Cross multiply
    120,071.04x = 180,106.57 × 45,207.98
  4. Step 4: Simplify right side
    120,071.04x = 8,142,253,988.39
  5. Step 5: Solve for x
    x = 8,142,253,988.39/120,071.04
  6. Step 6: Final answer
    x = 67,811.97

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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.