Home / 127,139.08-175,451.52-69,779.40

Finding the Fourth Proportional to 127,139.08, 175,451.52 and 69,779.40

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Solution

The fourth proportional to 127,139.08, 175,451.52 and 69,779.40 is: 96,295.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,139.08 : 175,451.52 = 69,779.40 : x
  2. Step 2: Convert to fraction form
    127,139.08/175,451.52 = 69,779.40/x
  3. Step 3: Cross multiply
    127,139.08x = 175,451.52 × 69,779.40
  4. Step 4: Simplify right side
    127,139.08x = 12,242,901,794.69
  5. Step 5: Solve for x
    x = 12,242,901,794.69/127,139.08
  6. Step 6: Final answer
    x = 96,295.35

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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.