Home / 191,721.80-287,625.90-112,795.40

Finding the Fourth Proportional to 191,721.80, 287,625.90 and 112,795.40

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Solution

The fourth proportional to 191,721.80, 287,625.90 and 112,795.40 is: 169,218.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.80 : 287,625.90 = 112,795.40 : x
  2. Step 2: Convert to fraction form
    191,721.80/287,625.90 = 112,795.40/x
  3. Step 3: Cross multiply
    191,721.80x = 287,625.90 × 112,795.40
  4. Step 4: Simplify right side
    191,721.80x = 32,442,878,440.86
  5. Step 5: Solve for x
    x = 32,442,878,440.86/191,721.80
  6. Step 6: Final answer
    x = 169,218.52

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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.