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Finding the Fourth Proportional to 144,650.91, 216,602.51 and 99,810.57

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Solution

The fourth proportional to 144,650.91, 216,602.51 and 99,810.57 is: 149,457.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,650.91 : 216,602.51 = 99,810.57 : x
  2. Step 2: Convert to fraction form
    144,650.91/216,602.51 = 99,810.57/x
  3. Step 3: Cross multiply
    144,650.91x = 216,602.51 × 99,810.57
  4. Step 4: Simplify right side
    144,650.91x = 21,619,219,487.48
  5. Step 5: Solve for x
    x = 21,619,219,487.48/144,650.91
  6. Step 6: Final answer
    x = 149,457.89

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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.