Home / 157,913.10-217,919.63-86,293.58

Finding the Fourth Proportional to 157,913.10, 217,919.63 and 86,293.58

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Solution

The fourth proportional to 157,913.10, 217,919.63 and 86,293.58 is: 119,084.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,913.10 : 217,919.63 = 86,293.58 : x
  2. Step 2: Convert to fraction form
    157,913.10/217,919.63 = 86,293.58/x
  3. Step 3: Cross multiply
    157,913.10x = 217,919.63 × 86,293.58
  4. Step 4: Simplify right side
    157,913.10x = 18,805,064,151.11
  5. Step 5: Solve for x
    x = 18,805,064,151.11/157,913.10
  6. Step 6: Final answer
    x = 119,084.89

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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.