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Finding the Fourth Proportional to 155,402.57, 214,489.51 and 98,802.89

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Solution

The fourth proportional to 155,402.57, 214,489.51 and 98,802.89 is: 136,369.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    155,402.57 : 214,489.51 = 98,802.89 : x
  2. Step 2: Convert to fraction form
    155,402.57/214,489.51 = 98,802.89/x
  3. Step 3: Cross multiply
    155,402.57x = 214,489.51 × 98,802.89
  4. Step 4: Simplify right side
    155,402.57x = 21,192,183,462.68
  5. Step 5: Solve for x
    x = 21,192,183,462.68/155,402.57
  6. Step 6: Final answer
    x = 136,369.58

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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.