Home / 153,792.32-212,235-85,815.44

Finding the Fourth Proportional to 153,792.32, 212,235 and 85,815.44

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Solution

The fourth proportional to 153,792.32, 212,235 and 85,815.44 is: 118,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,792.32 : 212,235 = 85,815.44 : x
  2. Step 2: Convert to fraction form
    153,792.32/212,235 = 85,815.44/x
  3. Step 3: Cross multiply
    153,792.32x = 212,235 × 85,815.44
  4. Step 4: Simplify right side
    153,792.32x = 18,213,039,908.40
  5. Step 5: Solve for x
    x = 18,213,039,908.40/153,792.32
  6. Step 6: Final answer
    x = 118,426.20

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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.