Home / 105,237.20-157,721.40-42,837.20

Finding the Fourth Proportional to 105,237.20, 157,721.40 and 42,837.20

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Solution

The fourth proportional to 105,237.20, 157,721.40 and 42,837.20 is: 64,201.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,237.20 : 157,721.40 = 42,837.20 : x
  2. Step 2: Convert to fraction form
    105,237.20/157,721.40 = 42,837.20/x
  3. Step 3: Cross multiply
    105,237.20x = 157,721.40 × 42,837.20
  4. Step 4: Simplify right side
    105,237.20x = 6,756,343,156.08
  5. Step 5: Solve for x
    x = 6,756,343,156.08/105,237.20
  6. Step 6: Final answer
    x = 64,201.09

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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.