Home / 153,430.05-211,718.34-85,453.37

Finding the Fourth Proportional to 153,430.05, 211,718.34 and 85,453.37

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Solution

The fourth proportional to 153,430.05, 211,718.34 and 85,453.37 is: 117,917.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,430.05 : 211,718.34 = 85,453.37 : x
  2. Step 2: Convert to fraction form
    153,430.05/211,718.34 = 85,453.37/x
  3. Step 3: Cross multiply
    153,430.05x = 211,718.34 × 85,453.37
  4. Step 4: Simplify right side
    153,430.05x = 18,092,045,643.81
  5. Step 5: Solve for x
    x = 18,092,045,643.81/153,430.05
  6. Step 6: Final answer
    x = 117,917.22

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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.