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Finding the Fourth Proportional to 153,349.02, 211,573.89 and 89,679.78

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Solution

The fourth proportional to 153,349.02, 211,573.89 and 89,679.78 is: 123,730.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,349.02 : 211,573.89 = 89,679.78 : x
  2. Step 2: Convert to fraction form
    153,349.02/211,573.89 = 89,679.78/x
  3. Step 3: Cross multiply
    153,349.02x = 211,573.89 × 89,679.78
  4. Step 4: Simplify right side
    153,349.02x = 18,973,899,908.94
  5. Step 5: Solve for x
    x = 18,973,899,908.94/153,349.02
  6. Step 6: Final answer
    x = 123,730.17

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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.