Home / 138,247.02-190,742.67-77,814.14

Finding the Fourth Proportional to 138,247.02, 190,742.67 and 77,814.14

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Solution

The fourth proportional to 138,247.02, 190,742.67 and 77,814.14 is: 107,362.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,247.02 : 190,742.67 = 77,814.14 : x
  2. Step 2: Convert to fraction form
    138,247.02/190,742.67 = 77,814.14/x
  3. Step 3: Cross multiply
    138,247.02x = 190,742.67 × 77,814.14
  4. Step 4: Simplify right side
    138,247.02x = 14,842,475,873.64
  5. Step 5: Solve for x
    x = 14,842,475,873.64/138,247.02
  6. Step 6: Final answer
    x = 107,362.00

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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.