Home / 102,129.72-153,160.56-42,954.36

Finding the Fourth Proportional to 102,129.72, 153,160.56 and 42,954.36

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Solution

The fourth proportional to 102,129.72, 153,160.56 and 42,954.36 is: 64,417.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,129.72 : 153,160.56 = 42,954.36 : x
  2. Step 2: Convert to fraction form
    102,129.72/153,160.56 = 42,954.36/x
  3. Step 3: Cross multiply
    102,129.72x = 153,160.56 × 42,954.36
  4. Step 4: Simplify right side
    102,129.72x = 6,578,913,832.04
  5. Step 5: Solve for x
    x = 6,578,913,832.04/102,129.72
  6. Step 6: Final answer
    x = 64,417.23

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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.