Home / 153,731.85-212,140.81-89,196.09

Finding the Fourth Proportional to 153,731.85, 212,140.81 and 89,196.09

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Solution

The fourth proportional to 153,731.85, 212,140.81 and 89,196.09 is: 123,085.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,731.85 : 212,140.81 = 89,196.09 : x
  2. Step 2: Convert to fraction form
    153,731.85/212,140.81 = 89,196.09/x
  3. Step 3: Cross multiply
    153,731.85x = 212,140.81 × 89,196.09
  4. Step 4: Simplify right side
    153,731.85x = 18,922,130,781.43
  5. Step 5: Solve for x
    x = 18,922,130,781.43/153,731.85
  6. Step 6: Final answer
    x = 123,085.30

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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.