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Finding the Fourth Proportional to 119,889.90, 165,452.07 and 65,445.30

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Solution

The fourth proportional to 119,889.90, 165,452.07 and 65,445.30 is: 90,316.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,889.90 : 165,452.07 = 65,445.30 : x
  2. Step 2: Convert to fraction form
    119,889.90/165,452.07 = 65,445.30/x
  3. Step 3: Cross multiply
    119,889.90x = 165,452.07 × 65,445.30
  4. Step 4: Simplify right side
    119,889.90x = 10,828,060,356.77
  5. Step 5: Solve for x
    x = 10,828,060,356.77/119,889.90
  6. Step 6: Final answer
    x = 90,316.70

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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.