Home / 142,140.90-213,210.36-57,881.28

Finding the Fourth Proportional to 142,140.90, 213,210.36 and 57,881.28

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Solution

The fourth proportional to 142,140.90, 213,210.36 and 57,881.28 is: 86,821.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,140.90 : 213,210.36 = 57,881.28 : x
  2. Step 2: Convert to fraction form
    142,140.90/213,210.36 = 57,881.28/x
  3. Step 3: Cross multiply
    142,140.90x = 213,210.36 × 57,881.28
  4. Step 4: Simplify right side
    142,140.90x = 12,340,888,546.06
  5. Step 5: Solve for x
    x = 12,340,888,546.06/142,140.90
  6. Step 6: Final answer
    x = 86,821.52

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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.