Home / 74,779.15-102,985.26-73,146.19

Finding the Fourth Proportional to 74,779.15, 102,985.26 and 73,146.19

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Solution

The fourth proportional to 74,779.15, 102,985.26 and 73,146.19 is: 100,736.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,779.15 : 102,985.26 = 73,146.19 : x
  2. Step 2: Convert to fraction form
    74,779.15/102,985.26 = 73,146.19/x
  3. Step 3: Cross multiply
    74,779.15x = 102,985.26 × 73,146.19
  4. Step 4: Simplify right side
    74,779.15x = 7,532,979,395.16
  5. Step 5: Solve for x
    x = 7,532,979,395.16/74,779.15
  6. Step 6: Final answer
    x = 100,736.36

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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.