Home / 105,434,167.47-158,161,714.80-38,978,015.21

Finding the Fourth Proportional to 105,434,167.47, 158,161,714.80 and 38,978,015.21

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Solution

The fourth proportional to 105,434,167.47, 158,161,714.80 and 38,978,015.21 is: 58,470,891.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,434,167.47 : 158,161,714.80 = 38,978,015.21 : x
  2. Step 2: Convert to fraction form
    105,434,167.47/158,161,714.80 = 38,978,015.21/x
  3. Step 3: Cross multiply
    105,434,167.47x = 158,161,714.80 × 38,978,015.21
  4. Step 4: Simplify right side
    105,434,167.47x = 6,164,829,724,323,274
  5. Step 5: Solve for x
    x = 6,164,829,724,323,274/105,434,167.47
  6. Step 6: Final answer
    x = 58,470,891.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.