Home / 191,721.90-287,692.20-73,478.10

Finding the Fourth Proportional to 191,721.90, 287,692.20 and 73,478.10

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Solution

The fourth proportional to 191,721.90, 287,692.20 and 73,478.10 is: 110,259.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,721.90 : 287,692.20 = 73,478.10 : x
  2. Step 2: Convert to fraction form
    191,721.90/287,692.20 = 73,478.10/x
  3. Step 3: Cross multiply
    191,721.90x = 287,692.20 × 73,478.10
  4. Step 4: Simplify right side
    191,721.90x = 21,139,076,240.82
  5. Step 5: Solve for x
    x = 21,139,076,240.82/191,721.90
  6. Step 6: Final answer
    x = 110,259.06

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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.