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Finding the Fourth Proportional to 100,362.89, 150,569.64 and 70,838.39

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Solution

The fourth proportional to 100,362.89, 150,569.64 and 70,838.39 is: 106,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,362.89 : 150,569.64 = 70,838.39 : x
  2. Step 2: Convert to fraction form
    100,362.89/150,569.64 = 70,838.39/x
  3. Step 3: Cross multiply
    100,362.89x = 150,569.64 × 70,838.39
  4. Step 4: Simplify right side
    100,362.89x = 10,666,110,880.48
  5. Step 5: Solve for x
    x = 10,666,110,880.48/100,362.89
  6. Step 6: Final answer
    x = 106,275.45

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1.5x scale

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.