Home / 191,900.72-287,708.91-91,965.75

Finding the Fourth Proportional to 191,900.72, 287,708.91 and 91,965.75

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Solution

The fourth proportional to 191,900.72, 287,708.91 and 91,965.75 is: 137,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,900.72 : 287,708.91 = 91,965.75 : x
  2. Step 2: Convert to fraction form
    191,900.72/287,708.91 = 91,965.75/x
  3. Step 3: Cross multiply
    191,900.72x = 287,708.91 × 91,965.75
  4. Step 4: Simplify right side
    191,900.72x = 26,459,365,689.83
  5. Step 5: Solve for x
    x = 26,459,365,689.83/191,900.72
  6. Step 6: Final answer
    x = 137,880.50

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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.