Home / 147,965.80-221,948.70-54,459.40

Finding the Fourth Proportional to 147,965.80, 221,948.70 and 54,459.40

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Solution

The fourth proportional to 147,965.80, 221,948.70 and 54,459.40 is: 81,689.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,965.80 : 221,948.70 = 54,459.40 : x
  2. Step 2: Convert to fraction form
    147,965.80/221,948.70 = 54,459.40/x
  3. Step 3: Cross multiply
    147,965.80x = 221,948.70 × 54,459.40
  4. Step 4: Simplify right side
    147,965.80x = 12,087,193,032.78
  5. Step 5: Solve for x
    x = 12,087,193,032.78/147,965.80
  6. Step 6: Final answer
    x = 81,689.10

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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.