Home / 119,852.64-165,397.12-66,139.20

Finding the Fourth Proportional to 119,852.64, 165,397.12 and 66,139.20

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Solution

The fourth proportional to 119,852.64, 165,397.12 and 66,139.20 is: 91,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,852.64 : 165,397.12 = 66,139.20 : x
  2. Step 2: Convert to fraction form
    119,852.64/165,397.12 = 66,139.20/x
  3. Step 3: Cross multiply
    119,852.64x = 165,397.12 × 66,139.20
  4. Step 4: Simplify right side
    119,852.64x = 10,939,233,199.10
  5. Step 5: Solve for x
    x = 10,939,233,199.10/119,852.64
  6. Step 6: Final answer
    x = 91,272.36

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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.