Home / 153,139.53-211,337.38-85,159.37

Finding the Fourth Proportional to 153,139.53, 211,337.38 and 85,159.37

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Solution

The fourth proportional to 153,139.53, 211,337.38 and 85,159.37 is: 117,522.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,139.53 : 211,337.38 = 85,159.37 : x
  2. Step 2: Convert to fraction form
    153,139.53/211,337.38 = 85,159.37/x
  3. Step 3: Cross multiply
    153,139.53x = 211,337.38 × 85,159.37
  4. Step 4: Simplify right side
    153,139.53x = 17,997,357,344.76
  5. Step 5: Solve for x
    x = 17,997,357,344.76/153,139.53
  6. Step 6: Final answer
    x = 117,522.61

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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.