Home / 122,498.40-169,066.04-74,779.24

Finding the Fourth Proportional to 122,498.40, 169,066.04 and 74,779.24

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Solution

The fourth proportional to 122,498.40, 169,066.04 and 74,779.24 is: 103,206.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,498.40 : 169,066.04 = 74,779.24 : x
  2. Step 2: Convert to fraction form
    122,498.40/169,066.04 = 74,779.24/x
  3. Step 3: Cross multiply
    122,498.40x = 169,066.04 × 74,779.24
  4. Step 4: Simplify right side
    122,498.40x = 12,642,629,981.01
  5. Step 5: Solve for x
    x = 12,642,629,981.01/122,498.40
  6. Step 6: Final answer
    x = 103,206.49

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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.