Home / 102,130.72-153,162.06-42,955.36

Finding the Fourth Proportional to 102,130.72, 153,162.06 and 42,955.36

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Solution

The fourth proportional to 102,130.72, 153,162.06 and 42,955.36 is: 64,418.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,130.72 : 153,162.06 = 42,955.36 : x
  2. Step 2: Convert to fraction form
    102,130.72/153,162.06 = 42,955.36/x
  3. Step 3: Cross multiply
    102,130.72x = 153,162.06 × 42,955.36
  4. Step 4: Simplify right side
    102,130.72x = 6,579,131,425.64
  5. Step 5: Solve for x
    x = 6,579,131,425.64/102,130.72
  6. Step 6: Final answer
    x = 64,418.73

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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.