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Finding the Fourth Proportional to 151,355.04, 208,870 and 84,287.04

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Solution

The fourth proportional to 151,355.04, 208,870 and 84,287.04 is: 116,316.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,355.04 : 208,870 = 84,287.04 : x
  2. Step 2: Convert to fraction form
    151,355.04/208,870 = 84,287.04/x
  3. Step 3: Cross multiply
    151,355.04x = 208,870 × 84,287.04
  4. Step 4: Simplify right side
    151,355.04x = 17,605,034,044.80
  5. Step 5: Solve for x
    x = 17,605,034,044.80/151,355.04
  6. Step 6: Final answer
    x = 116,316.14

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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.