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Finding the Fourth Proportional to 148,071.30, 221,851.80 and 69,023.40

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Solution

The fourth proportional to 148,071.30, 221,851.80 and 69,023.40 is: 103,416.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,071.30 : 221,851.80 = 69,023.40 : x
  2. Step 2: Convert to fraction form
    148,071.30/221,851.80 = 69,023.40/x
  3. Step 3: Cross multiply
    148,071.30x = 221,851.80 × 69,023.40
  4. Step 4: Simplify right side
    148,071.30x = 15,312,965,532.12
  5. Step 5: Solve for x
    x = 15,312,965,532.12/148,071.30
  6. Step 6: Final answer
    x = 103,416.16

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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.