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Finding the Fourth Proportional to 104,367.69, 143,678.75 and 99,607.32

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Solution

The fourth proportional to 104,367.69, 143,678.75 and 99,607.32 is: 137,125.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,367.69 : 143,678.75 = 99,607.32 : x
  2. Step 2: Convert to fraction form
    104,367.69/143,678.75 = 99,607.32/x
  3. Step 3: Cross multiply
    104,367.69x = 143,678.75 × 99,607.32
  4. Step 4: Simplify right side
    104,367.69x = 14,311,454,730.41
  5. Step 5: Solve for x
    x = 14,311,454,730.41/104,367.69
  6. Step 6: Final answer
    x = 137,125.34

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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.