Home / 142,368.47-196,458.62-78,701.25

Finding the Fourth Proportional to 142,368.47, 196,458.62 and 78,701.25

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Solution

The fourth proportional to 142,368.47, 196,458.62 and 78,701.25 is: 108,602.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,368.47 : 196,458.62 = 78,701.25 : x
  2. Step 2: Convert to fraction form
    142,368.47/196,458.62 = 78,701.25/x
  3. Step 3: Cross multiply
    142,368.47x = 196,458.62 × 78,701.25
  4. Step 4: Simplify right side
    142,368.47x = 15,461,538,573.77
  5. Step 5: Solve for x
    x = 15,461,538,573.77/142,368.47
  6. Step 6: Final answer
    x = 108,602.27

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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.