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Finding the Fourth Proportional to 158,280.76, 218,418.79 and 86,646.93

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Solution

The fourth proportional to 158,280.76, 218,418.79 and 86,646.93 is: 119,568.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,280.76 : 218,418.79 = 86,646.93 : x
  2. Step 2: Convert to fraction form
    158,280.76/218,418.79 = 86,646.93/x
  3. Step 3: Cross multiply
    158,280.76x = 218,418.79 × 86,646.93
  4. Step 4: Simplify right side
    158,280.76x = 18,925,317,607.81
  5. Step 5: Solve for x
    x = 18,925,317,607.81/158,280.76
  6. Step 6: Final answer
    x = 119,568.02

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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.