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Finding the Fourth Proportional to 93,168.80, 139,742.40 and 26,619.20

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Solution

The fourth proportional to 93,168.80, 139,742.40 and 26,619.20 is: 39,925.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,168.80 : 139,742.40 = 26,619.20 : x
  2. Step 2: Convert to fraction form
    93,168.80/139,742.40 = 26,619.20/x
  3. Step 3: Cross multiply
    93,168.80x = 139,742.40 × 26,619.20
  4. Step 4: Simplify right side
    93,168.80x = 3,719,830,894.08
  5. Step 5: Solve for x
    x = 3,719,830,894.08/93,168.80
  6. Step 6: Final answer
    x = 39,925.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.