Home / 102,390.36-140,275.64-98,555.28

Finding the Fourth Proportional to 102,390.36, 140,275.64 and 98,555.28

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Solution

The fourth proportional to 102,390.36, 140,275.64 and 98,555.28 is: 135,021.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,390.36 : 140,275.64 = 98,555.28 : x
  2. Step 2: Convert to fraction form
    102,390.36/140,275.64 = 98,555.28/x
  3. Step 3: Cross multiply
    102,390.36x = 140,275.64 × 98,555.28
  4. Step 4: Simplify right side
    102,390.36x = 13,824,904,977.38
  5. Step 5: Solve for x
    x = 13,824,904,977.38/102,390.36
  6. Step 6: Final answer
    x = 135,021.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.