Home / 122,779.60-169,433.04-75,032.80

Finding the Fourth Proportional to 122,779.60, 169,433.04 and 75,032.80

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Solution

The fourth proportional to 122,779.60, 169,433.04 and 75,032.80 is: 103,543.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,779.60 : 169,433.04 = 75,032.80 : x
  2. Step 2: Convert to fraction form
    122,779.60/169,433.04 = 75,032.80/x
  3. Step 3: Cross multiply
    122,779.60x = 169,433.04 × 75,032.80
  4. Step 4: Simplify right side
    122,779.60x = 12,713,035,403.71
  5. Step 5: Solve for x
    x = 12,713,035,403.71/122,779.60
  6. Step 6: Final answer
    x = 103,543.55

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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.