Home / 137,775.30-190,116.78-77,332.08

Finding the Fourth Proportional to 137,775.30, 190,116.78 and 77,332.08

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Solution

The fourth proportional to 137,775.30, 190,116.78 and 77,332.08 is: 106,710.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,775.30 : 190,116.78 = 77,332.08 : x
  2. Step 2: Convert to fraction form
    137,775.30/190,116.78 = 77,332.08/x
  3. Step 3: Cross multiply
    137,775.30x = 190,116.78 × 77,332.08
  4. Step 4: Simplify right side
    137,775.30x = 14,702,126,463.25
  5. Step 5: Solve for x
    x = 14,702,126,463.25/137,775.30
  6. Step 6: Final answer
    x = 106,710.90

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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.