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Finding the Fourth Proportional to 104,669.92, 144,486.32 and 64,400.16

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Solution

The fourth proportional to 104,669.92, 144,486.32 and 64,400.16 is: 88,897.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,669.92 : 144,486.32 = 64,400.16 : x
  2. Step 2: Convert to fraction form
    104,669.92/144,486.32 = 64,400.16/x
  3. Step 3: Cross multiply
    104,669.92x = 144,486.32 × 64,400.16
  4. Step 4: Simplify right side
    104,669.92x = 9,304,942,125.81
  5. Step 5: Solve for x
    x = 9,304,942,125.81/104,669.92
  6. Step 6: Final answer
    x = 88,897.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.