Home / 101,779.08-140,448.15-56,455.26

Finding the Fourth Proportional to 101,779.08, 140,448.15 and 56,455.26

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Solution

The fourth proportional to 101,779.08, 140,448.15 and 56,455.26 is: 77,904.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,779.08 : 140,448.15 = 56,455.26 : x
  2. Step 2: Convert to fraction form
    101,779.08/140,448.15 = 56,455.26/x
  3. Step 3: Cross multiply
    101,779.08x = 140,448.15 × 56,455.26
  4. Step 4: Simplify right side
    101,779.08x = 7,929,036,824.77
  5. Step 5: Solve for x
    x = 7,929,036,824.77/101,779.08
  6. Step 6: Final answer
    x = 77,904.39

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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.