Home / 117,127.81-161,635.61-63,412.71

Finding the Fourth Proportional to 117,127.81, 161,635.61 and 63,412.71

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Solution

The fourth proportional to 117,127.81, 161,635.61 and 63,412.71 is: 87,509.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,127.81 : 161,635.61 = 63,412.71 : x
  2. Step 2: Convert to fraction form
    117,127.81/161,635.61 = 63,412.71/x
  3. Step 3: Cross multiply
    117,127.81x = 161,635.61 × 63,412.71
  4. Step 4: Simplify right side
    117,127.81x = 10,249,752,062.60
  5. Step 5: Solve for x
    x = 10,249,752,062.60/117,127.81
  6. Step 6: Final answer
    x = 87,509.12

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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.