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Finding the Fourth Proportional to 153,515.53, 211,848.24 and 85,532.23

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Solution

The fourth proportional to 153,515.53, 211,848.24 and 85,532.23 is: 118,032.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,515.53 : 211,848.24 = 85,532.23 : x
  2. Step 2: Convert to fraction form
    153,515.53/211,848.24 = 85,532.23/x
  3. Step 3: Cross multiply
    153,515.53x = 211,848.24 × 85,532.23
  4. Step 4: Simplify right side
    153,515.53x = 18,119,852,388.78
  5. Step 5: Solve for x
    x = 18,119,852,388.78/153,515.53
  6. Step 6: Final answer
    x = 118,032.70

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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.