Home / 142,804.24-197,075.10-86,204.68

Finding the Fourth Proportional to 142,804.24, 197,075.10 and 86,204.68

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Solution

The fourth proportional to 142,804.24, 197,075.10 and 86,204.68 is: 118,965.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,804.24 : 197,075.10 = 86,204.68 : x
  2. Step 2: Convert to fraction form
    142,804.24/197,075.10 = 86,204.68/x
  3. Step 3: Cross multiply
    142,804.24x = 197,075.10 × 86,204.68
  4. Step 4: Simplify right side
    142,804.24x = 16,988,795,931.47
  5. Step 5: Solve for x
    x = 16,988,795,931.47/142,804.24
  6. Step 6: Final answer
    x = 118,965.63

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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.