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Finding the Fourth Proportional to 105,888.60, 158,832.90 and 88,781.40

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Solution

The fourth proportional to 105,888.60, 158,832.90 and 88,781.40 is: 133,172.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,888.60 : 158,832.90 = 88,781.40 : x
  2. Step 2: Convert to fraction form
    105,888.60/158,832.90 = 88,781.40/x
  3. Step 3: Cross multiply
    105,888.60x = 158,832.90 × 88,781.40
  4. Step 4: Simplify right side
    105,888.60x = 14,101,407,228.06
  5. Step 5: Solve for x
    x = 14,101,407,228.06/105,888.60
  6. Step 6: Final answer
    x = 133,172.10

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1.5x scale

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.