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Finding the Fourth Proportional to 144,530.54, 216,263.64 and 87,400.70

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Solution

The fourth proportional to 144,530.54, 216,263.64 and 87,400.70 is: 130,779.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,530.54 : 216,263.64 = 87,400.70 : x
  2. Step 2: Convert to fraction form
    144,530.54/216,263.64 = 87,400.70/x
  3. Step 3: Cross multiply
    144,530.54x = 216,263.64 × 87,400.70
  4. Step 4: Simplify right side
    144,530.54x = 18,901,593,520.55
  5. Step 5: Solve for x
    x = 18,901,593,520.55/144,530.54
  6. Step 6: Final answer
    x = 130,779.24

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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.