Home / 122,779.47-169,458.93-76,860.45

Finding the Fourth Proportional to 122,779.47, 169,458.93 and 76,860.45

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Solution

The fourth proportional to 122,779.47, 169,458.93 and 76,860.45 is: 106,081.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,779.47 : 169,458.93 = 76,860.45 : x
  2. Step 2: Convert to fraction form
    122,779.47/169,458.93 = 76,860.45/x
  3. Step 3: Cross multiply
    122,779.47x = 169,458.93 × 76,860.45
  4. Step 4: Simplify right side
    122,779.47x = 13,024,689,616.32
  5. Step 5: Solve for x
    x = 13,024,689,616.32/122,779.47
  6. Step 6: Final answer
    x = 106,081.98

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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.