Home / 147,881.12-221,789-42,677.20

Finding the Fourth Proportional to 147,881.12, 221,789 and 42,677.20

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Solution

The fourth proportional to 147,881.12, 221,789 and 42,677.20 is: 64,006.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,881.12 : 221,789 = 42,677.20 : x
  2. Step 2: Convert to fraction form
    147,881.12/221,789 = 42,677.20/x
  3. Step 3: Cross multiply
    147,881.12x = 221,789 × 42,677.20
  4. Step 4: Simplify right side
    147,881.12x = 9,465,333,510.80
  5. Step 5: Solve for x
    x = 9,465,333,510.80/147,881.12
  6. Step 6: Final answer
    x = 64,006.37

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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.