Home / 101,289.36-139,779.72-56,577.36

Finding the Fourth Proportional to 101,289.36, 139,779.72 and 56,577.36

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Solution

The fourth proportional to 101,289.36, 139,779.72 and 56,577.36 is: 78,076.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,289.36 : 139,779.72 = 56,577.36 : x
  2. Step 2: Convert to fraction form
    101,289.36/139,779.72 = 56,577.36/x
  3. Step 3: Cross multiply
    101,289.36x = 139,779.72 × 56,577.36
  4. Step 4: Simplify right side
    101,289.36x = 7,908,367,539.14
  5. Step 5: Solve for x
    x = 7,908,367,539.14/101,289.36
  6. Step 6: Final answer
    x = 78,076.98

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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.