Home / 153,721.20-212,103-93,323.64

Finding the Fourth Proportional to 153,721.20, 212,103 and 93,323.64

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Solution

The fourth proportional to 153,721.20, 212,103 and 93,323.64 is: 128,767.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,721.20 : 212,103 = 93,323.64 : x
  2. Step 2: Convert to fraction form
    153,721.20/212,103 = 93,323.64/x
  3. Step 3: Cross multiply
    153,721.20x = 212,103 × 93,323.64
  4. Step 4: Simplify right side
    153,721.20x = 19,794,224,014.92
  5. Step 5: Solve for x
    x = 19,794,224,014.92/153,721.20
  6. Step 6: Final answer
    x = 128,767.04

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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.