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Finding the Fourth Proportional to 155,953.50, 233,969.22 and 45,145.50

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Solution

The fourth proportional to 155,953.50, 233,969.22 and 45,145.50 is: 67,729.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,953.50 : 233,969.22 = 45,145.50 : x
  2. Step 2: Convert to fraction form
    155,953.50/233,969.22 = 45,145.50/x
  3. Step 3: Cross multiply
    155,953.50x = 233,969.22 × 45,145.50
  4. Step 4: Simplify right side
    155,953.50x = 10,562,657,421.51
  5. Step 5: Solve for x
    x = 10,562,657,421.51/155,953.50
  6. Step 6: Final answer
    x = 67,729.53

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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.