Home / 143,335.18-197,804.91-78,807.14

Finding the Fourth Proportional to 143,335.18, 197,804.91 and 78,807.14

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Solution

The fourth proportional to 143,335.18, 197,804.91 and 78,807.14 is: 108,755.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,335.18 : 197,804.91 = 78,807.14 : x
  2. Step 2: Convert to fraction form
    143,335.18/197,804.91 = 78,807.14/x
  3. Step 3: Cross multiply
    143,335.18x = 197,804.91 × 78,807.14
  4. Step 4: Simplify right side
    143,335.18x = 15,588,439,235.06
  5. Step 5: Solve for x
    x = 15,588,439,235.06/143,335.18
  6. Step 6: Final answer
    x = 108,755.15

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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.