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Finding the Fourth Proportional to 152,802.68, 210,864.38 and 84,815.64

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Solution

The fourth proportional to 152,802.68, 210,864.38 and 84,815.64 is: 117,043.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    152,802.68 : 210,864.38 = 84,815.64 : x
  2. Step 2: Convert to fraction form
    152,802.68/210,864.38 = 84,815.64/x
  3. Step 3: Cross multiply
    152,802.68x = 210,864.38 × 84,815.64
  4. Step 4: Simplify right side
    152,802.68x = 17,884,597,342.90
  5. Step 5: Solve for x
    x = 17,884,597,342.90/152,802.68
  6. Step 6: Final answer
    x = 117,043.74

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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.