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Finding the Fourth Proportional to 153,564.64, 211,934.64 and 93,133.28

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Solution

The fourth proportional to 153,564.64, 211,934.64 and 93,133.28 is: 128,533.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,564.64 : 211,934.64 = 93,133.28 : x
  2. Step 2: Convert to fraction form
    153,564.64/211,934.64 = 93,133.28/x
  3. Step 3: Cross multiply
    153,564.64x = 211,934.64 × 93,133.28
  4. Step 4: Simplify right side
    153,564.64x = 19,738,168,168.82
  5. Step 5: Solve for x
    x = 19,738,168,168.82/153,564.64
  6. Step 6: Final answer
    x = 128,533.29

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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.