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Finding the Fourth Proportional to 125,205.76, 172,707.18 and 102,268.91

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Solution

The fourth proportional to 125,205.76, 172,707.18 and 102,268.91 is: 141,068.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,205.76 : 172,707.18 = 102,268.91 : x
  2. Step 2: Convert to fraction form
    125,205.76/172,707.18 = 102,268.91/x
  3. Step 3: Cross multiply
    125,205.76x = 172,707.18 × 102,268.91
  4. Step 4: Simplify right side
    125,205.76x = 17,662,575,047.77
  5. Step 5: Solve for x
    x = 17,662,575,047.77/125,205.76
  6. Step 6: Final answer
    x = 141,068.39

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.