Home / 153,579.07-211,956.33-85,602.25

Finding the Fourth Proportional to 153,579.07, 211,956.33 and 85,602.25

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Solution

The fourth proportional to 153,579.07, 211,956.33 and 85,602.25 is: 118,140.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,579.07 : 211,956.33 = 85,602.25 : x
  2. Step 2: Convert to fraction form
    153,579.07/211,956.33 = 85,602.25/x
  3. Step 3: Cross multiply
    153,579.07x = 211,956.33 × 85,602.25
  4. Step 4: Simplify right side
    153,579.07x = 18,143,938,749.74
  5. Step 5: Solve for x
    x = 18,143,938,749.74/153,579.07
  6. Step 6: Final answer
    x = 118,140.70

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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.