Home / 142,146.48-196,160.63-77,615.51

Finding the Fourth Proportional to 142,146.48, 196,160.63 and 77,615.51

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Solution

The fourth proportional to 142,146.48, 196,160.63 and 77,615.51 is: 107,108.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,146.48 : 196,160.63 = 77,615.51 : x
  2. Step 2: Convert to fraction form
    142,146.48/196,160.63 = 77,615.51/x
  3. Step 3: Cross multiply
    142,146.48x = 196,160.63 × 77,615.51
  4. Step 4: Simplify right side
    142,146.48x = 15,225,108,023.81
  5. Step 5: Solve for x
    x = 15,225,108,023.81/142,146.48
  6. Step 6: Final answer
    x = 107,108.58

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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.