Home / 142,804.02-197,071.71-78,272.76

Finding the Fourth Proportional to 142,804.02, 197,071.71 and 78,272.76

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Solution

The fourth proportional to 142,804.02, 197,071.71 and 78,272.76 is: 108,017.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,804.02 : 197,071.71 = 78,272.76 : x
  2. Step 2: Convert to fraction form
    142,804.02/197,071.71 = 78,272.76/x
  3. Step 3: Cross multiply
    142,804.02x = 197,071.71 × 78,272.76
  4. Step 4: Simplify right side
    142,804.02x = 15,425,346,659.62
  5. Step 5: Solve for x
    x = 15,425,346,659.62/142,804.02
  6. Step 6: Final answer
    x = 108,017.59

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1.5x scale

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.