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Finding the Fourth Proportional to 162,308.34, 223,970.94 and 90,678.42

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Solution

The fourth proportional to 162,308.34, 223,970.94 and 90,678.42 is: 125,128.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,308.34 : 223,970.94 = 90,678.42 : x
  2. Step 2: Convert to fraction form
    162,308.34/223,970.94 = 90,678.42/x
  3. Step 3: Cross multiply
    162,308.34x = 223,970.94 × 90,678.42
  4. Step 4: Simplify right side
    162,308.34x = 20,309,330,965.11
  5. Step 5: Solve for x
    x = 20,309,330,965.11/162,308.34
  6. Step 6: Final answer
    x = 125,128.08

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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.