Home / 115,748.88-159,745.36-70,430.16

Finding the Fourth Proportional to 115,748.88, 159,745.36 and 70,430.16

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Solution

The fourth proportional to 115,748.88, 159,745.36 and 70,430.16 is: 97,200.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,748.88 : 159,745.36 = 70,430.16 : x
  2. Step 2: Convert to fraction form
    115,748.88/159,745.36 = 70,430.16/x
  3. Step 3: Cross multiply
    115,748.88x = 159,745.36 × 70,430.16
  4. Step 4: Simplify right side
    115,748.88x = 11,250,891,264.06
  5. Step 5: Solve for x
    x = 11,250,891,264.06/115,748.88
  6. Step 6: Final answer
    x = 97,200.87

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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.