Home / 137,730.08-190,069-76,480.32

Finding the Fourth Proportional to 137,730.08, 190,069 and 76,480.32

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Solution

The fourth proportional to 137,730.08, 190,069 and 76,480.32 is: 105,543.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,730.08 : 190,069 = 76,480.32 : x
  2. Step 2: Convert to fraction form
    137,730.08/190,069 = 76,480.32/x
  3. Step 3: Cross multiply
    137,730.08x = 190,069 × 76,480.32
  4. Step 4: Simplify right side
    137,730.08x = 14,536,537,942.08
  5. Step 5: Solve for x
    x = 14,536,537,942.08/137,730.08
  6. Step 6: Final answer
    x = 105,543.67

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.