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Finding the Fourth Proportional to 186,420.80, 257,272.80 and 110,959.04

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Solution

The fourth proportional to 186,420.80, 257,272.80 and 110,959.04 is: 153,130.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,420.80 : 257,272.80 = 110,959.04 : x
  2. Step 2: Convert to fraction form
    186,420.80/257,272.80 = 110,959.04/x
  3. Step 3: Cross multiply
    186,420.80x = 257,272.80 × 110,959.04
  4. Step 4: Simplify right side
    186,420.80x = 28,546,742,906.11
  5. Step 5: Solve for x
    x = 28,546,742,906.11/186,420.80
  6. Step 6: Final answer
    x = 153,130.67

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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.