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Finding the Fourth Proportional to 144,415.08, 216,530.34 and 69,385.92

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Solution

The fourth proportional to 144,415.08, 216,530.34 and 69,385.92 is: 104,034.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,415.08 : 216,530.34 = 69,385.92 : x
  2. Step 2: Convert to fraction form
    144,415.08/216,530.34 = 69,385.92/x
  3. Step 3: Cross multiply
    144,415.08x = 216,530.34 × 69,385.92
  4. Step 4: Simplify right side
    144,415.08x = 15,024,156,848.81
  5. Step 5: Solve for x
    x = 15,024,156,848.81/144,415.08
  6. Step 6: Final answer
    x = 104,034.54

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1.5x scale

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.