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Finding the Fourth Proportional to 188,457.30, 260,061.48 and 103,577.40

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Solution

The fourth proportional to 188,457.30, 260,061.48 and 103,577.40 is: 142,931.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,457.30 : 260,061.48 = 103,577.40 : x
  2. Step 2: Convert to fraction form
    188,457.30/260,061.48 = 103,577.40/x
  3. Step 3: Cross multiply
    188,457.30x = 260,061.48 × 103,577.40
  4. Step 4: Simplify right side
    188,457.30x = 26,936,491,938.55
  5. Step 5: Solve for x
    x = 26,936,491,938.55/188,457.30
  6. Step 6: Final answer
    x = 142,931.54

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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.