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Finding the Fourth Proportional to 188,970.03, 260,779.01 and 102,928.75

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Solution

The fourth proportional to 188,970.03, 260,779.01 and 102,928.75 is: 142,041.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,970.03 : 260,779.01 = 102,928.75 : x
  2. Step 2: Convert to fraction form
    188,970.03/260,779.01 = 102,928.75/x
  3. Step 3: Cross multiply
    188,970.03x = 260,779.01 × 102,928.75
  4. Step 4: Simplify right side
    188,970.03x = 26,841,657,478.37
  5. Step 5: Solve for x
    x = 26,841,657,478.37/188,970.03
  6. Step 6: Final answer
    x = 142,041.87

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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.