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Finding the Fourth Proportional to 149,001.62, 205,624.80 and 81,019.05

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Solution

The fourth proportional to 149,001.62, 205,624.80 and 81,019.05 is: 111,807.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    149,001.62 : 205,624.80 = 81,019.05 : x
  2. Step 2: Convert to fraction form
    149,001.62/205,624.80 = 81,019.05/x
  3. Step 3: Cross multiply
    149,001.62x = 205,624.80 × 81,019.05
  4. Step 4: Simplify right side
    149,001.62x = 16,659,525,547.34
  5. Step 5: Solve for x
    x = 16,659,525,547.34/149,001.62
  6. Step 6: Final answer
    x = 111,807.68

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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.