Home / 120,159.45-165,816.76-66,442.63

Finding the Fourth Proportional to 120,159.45, 165,816.76 and 66,442.63

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Solution

The fourth proportional to 120,159.45, 165,816.76 and 66,442.63 is: 91,689.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,159.45 : 165,816.76 = 66,442.63 : x
  2. Step 2: Convert to fraction form
    120,159.45/165,816.76 = 66,442.63/x
  3. Step 3: Cross multiply
    120,159.45x = 165,816.76 × 66,442.63
  4. Step 4: Simplify right side
    120,159.45x = 11,017,302,047.02
  5. Step 5: Solve for x
    x = 11,017,302,047.02/120,159.45
  6. Step 6: Final answer
    x = 91,689.02

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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.