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Finding the Fourth Proportional to 164,479.40, 246,719.10 and 105,430.40

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Solution

The fourth proportional to 164,479.40, 246,719.10 and 105,430.40 is: 158,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,479.40 : 246,719.10 = 105,430.40 : x
  2. Step 2: Convert to fraction form
    164,479.40/246,719.10 = 105,430.40/x
  3. Step 3: Cross multiply
    164,479.40x = 246,719.10 × 105,430.40
  4. Step 4: Simplify right side
    164,479.40x = 26,011,693,400.64
  5. Step 5: Solve for x
    x = 26,011,693,400.64/164,479.40
  6. Step 6: Final answer
    x = 158,145.60

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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.