Home / 153,942.20-212,586.95-145,555.51

Finding the Fourth Proportional to 153,942.20, 212,586.95 and 145,555.51

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Solution

The fourth proportional to 153,942.20, 212,586.95 and 145,555.51 is: 201,005.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,942.20 : 212,586.95 = 145,555.51 : x
  2. Step 2: Convert to fraction form
    153,942.20/212,586.95 = 145,555.51/x
  3. Step 3: Cross multiply
    153,942.20x = 212,586.95 × 145,555.51
  4. Step 4: Simplify right side
    153,942.20x = 30,943,201,926.59
  5. Step 5: Solve for x
    x = 30,943,201,926.59/153,942.20
  6. Step 6: Final answer
    x = 201,005.32

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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.