Home / 112,349.90-154,779.19-78,296.49

Finding the Fourth Proportional to 112,349.90, 154,779.19 and 78,296.49

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Solution

The fourth proportional to 112,349.90, 154,779.19 and 78,296.49 is: 107,865.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,349.90 : 154,779.19 = 78,296.49 : x
  2. Step 2: Convert to fraction form
    112,349.90/154,779.19 = 78,296.49/x
  3. Step 3: Cross multiply
    112,349.90x = 154,779.19 × 78,296.49
  4. Step 4: Simplify right side
    112,349.90x = 12,118,667,106.30
  5. Step 5: Solve for x
    x = 12,118,667,106.30/112,349.90
  6. Step 6: Final answer
    x = 107,865.40

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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.