Home / 102,788.68-141,935.52-85,883.16

Finding the Fourth Proportional to 102,788.68, 141,935.52 and 85,883.16

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Solution

The fourth proportional to 102,788.68, 141,935.52 and 85,883.16 is: 118,591.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,788.68 : 141,935.52 = 85,883.16 : x
  2. Step 2: Convert to fraction form
    102,788.68/141,935.52 = 85,883.16/x
  3. Step 3: Cross multiply
    102,788.68x = 141,935.52 × 85,883.16
  4. Step 4: Simplify right side
    102,788.68x = 12,189,870,973.84
  5. Step 5: Solve for x
    x = 12,189,870,973.84/102,788.68
  6. Step 6: Final answer
    x = 118,591.57

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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.