Home / 142,615.17-196,801.13-78,071.93

Finding the Fourth Proportional to 142,615.17, 196,801.13 and 78,071.93

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Solution

The fourth proportional to 142,615.17, 196,801.13 and 78,071.93 is: 107,734.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,615.17 : 196,801.13 = 78,071.93 : x
  2. Step 2: Convert to fraction form
    142,615.17/196,801.13 = 78,071.93/x
  3. Step 3: Cross multiply
    142,615.17x = 196,801.13 × 78,071.93
  4. Step 4: Simplify right side
    142,615.17x = 15,364,642,670.92
  5. Step 5: Solve for x
    x = 15,364,642,670.92/142,615.17
  6. Step 6: Final answer
    x = 107,734.98

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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.