Home / 142,083.05-213,159.65-42,242.81

Finding the Fourth Proportional to 142,083.05, 213,159.65 and 42,242.81

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Solution

The fourth proportional to 142,083.05, 213,159.65 and 42,242.81 is: 63,374.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,083.05 : 213,159.65 = 42,242.81 : x
  2. Step 2: Convert to fraction form
    142,083.05/213,159.65 = 42,242.81/x
  3. Step 3: Cross multiply
    142,083.05x = 213,159.65 × 42,242.81
  4. Step 4: Simplify right side
    142,083.05x = 9,004,461,317.60
  5. Step 5: Solve for x
    x = 9,004,461,317.60/142,083.05
  6. Step 6: Final answer
    x = 63,374.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.