Home / 228,120.90-314,779.23-126,139.38

Finding the Fourth Proportional to 228,120.90, 314,779.23 and 126,139.38

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Solution

The fourth proportional to 228,120.90, 314,779.23 and 126,139.38 is: 174,057.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,120.90 : 314,779.23 = 126,139.38 : x
  2. Step 2: Convert to fraction form
    228,120.90/314,779.23 = 126,139.38/x
  3. Step 3: Cross multiply
    228,120.90x = 314,779.23 × 126,139.38
  4. Step 4: Simplify right side
    228,120.90x = 39,706,056,909.08
  5. Step 5: Solve for x
    x = 39,706,056,909.08/228,120.90
  6. Step 6: Final answer
    x = 174,057.08

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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.