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Finding the Fourth Proportional to 144,316.72, 216,485.88 and 39,134.08

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Solution

The fourth proportional to 144,316.72, 216,485.88 and 39,134.08 is: 58,704.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,316.72 : 216,485.88 = 39,134.08 : x
  2. Step 2: Convert to fraction form
    144,316.72/216,485.88 = 39,134.08/x
  3. Step 3: Cross multiply
    144,316.72x = 216,485.88 × 39,134.08
  4. Step 4: Simplify right side
    144,316.72x = 8,471,975,746.79
  5. Step 5: Solve for x
    x = 8,471,975,746.79/144,316.72
  6. Step 6: Final answer
    x = 58,704.05

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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.