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Finding the Fourth Proportional to 188,498.08, 260,130.90 and 103,615.12

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Solution

The fourth proportional to 188,498.08, 260,130.90 and 103,615.12 is: 142,990.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,498.08 : 260,130.90 = 103,615.12 : x
  2. Step 2: Convert to fraction form
    188,498.08/260,130.90 = 103,615.12/x
  3. Step 3: Cross multiply
    188,498.08x = 260,130.90 × 103,615.12
  4. Step 4: Simplify right side
    188,498.08x = 26,953,494,419.21
  5. Step 5: Solve for x
    x = 26,953,494,419.21/188,498.08
  6. Step 6: Final answer
    x = 142,990.82

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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.