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Finding the Fourth Proportional to 144,030.80, 215,981.40 and 65,104.40

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Solution

The fourth proportional to 144,030.80, 215,981.40 and 65,104.40 is: 97,627.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,030.80 : 215,981.40 = 65,104.40 : x
  2. Step 2: Convert to fraction form
    144,030.80/215,981.40 = 65,104.40/x
  3. Step 3: Cross multiply
    144,030.80x = 215,981.40 × 65,104.40
  4. Step 4: Simplify right side
    144,030.80x = 14,061,339,458.16
  5. Step 5: Solve for x
    x = 14,061,339,458.16/144,030.80
  6. Step 6: Final answer
    x = 97,627.31

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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.