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Finding the Fourth Proportional to 112,755.96, 155,602.89 and 65,008.89

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Solution

The fourth proportional to 112,755.96, 155,602.89 and 65,008.89 is: 89,712.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,755.96 : 155,602.89 = 65,008.89 : x
  2. Step 2: Convert to fraction form
    112,755.96/155,602.89 = 65,008.89/x
  3. Step 3: Cross multiply
    112,755.96x = 155,602.89 × 65,008.89
  4. Step 4: Simplify right side
    112,755.96x = 10,115,571,159.69
  5. Step 5: Solve for x
    x = 10,115,571,159.69/112,755.96
  6. Step 6: Final answer
    x = 89,712.08

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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.