Home / 147,671.10-221,178.60-121,427.10

Finding the Fourth Proportional to 147,671.10, 221,178.60 and 121,427.10

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Solution

The fourth proportional to 147,671.10, 221,178.60 and 121,427.10 is: 181,870.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,671.10 : 221,178.60 = 121,427.10 : x
  2. Step 2: Convert to fraction form
    147,671.10/221,178.60 = 121,427.10/x
  3. Step 3: Cross multiply
    147,671.10x = 221,178.60 × 121,427.10
  4. Step 4: Simplify right side
    147,671.10x = 26,857,075,980.06
  5. Step 5: Solve for x
    x = 26,857,075,980.06/147,671.10
  6. Step 6: Final answer
    x = 181,870.90

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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.