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Finding the Fourth Proportional to 162,312.80, 243,031.80 and 127,320.80

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Solution

The fourth proportional to 162,312.80, 243,031.80 and 127,320.80 is: 190,638.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,312.80 : 243,031.80 = 127,320.80 : x
  2. Step 2: Convert to fraction form
    162,312.80/243,031.80 = 127,320.80/x
  3. Step 3: Cross multiply
    162,312.80x = 243,031.80 × 127,320.80
  4. Step 4: Simplify right side
    162,312.80x = 30,943,003,201.44
  5. Step 5: Solve for x
    x = 30,943,003,201.44/162,312.80
  6. Step 6: Final answer
    x = 190,638.10

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1.5x scale

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.