Home / 120,260.17-165,956.65-66,547.45

Finding the Fourth Proportional to 120,260.17, 165,956.65 and 66,547.45

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Solution

The fourth proportional to 120,260.17, 165,956.65 and 66,547.45 is: 91,834.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,260.17 : 165,956.65 = 66,547.45 : x
  2. Step 2: Convert to fraction form
    120,260.17/165,956.65 = 66,547.45/x
  3. Step 3: Cross multiply
    120,260.17x = 165,956.65 × 66,547.45
  4. Step 4: Simplify right side
    120,260.17x = 11,043,991,868.04
  5. Step 5: Solve for x
    x = 11,043,991,868.04/120,260.17
  6. Step 6: Final answer
    x = 91,834.16

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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.