Home / 131,851.07-181,955.36-71,421.72

Finding the Fourth Proportional to 131,851.07, 181,955.36 and 71,421.72

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Solution

The fourth proportional to 131,851.07, 181,955.36 and 71,421.72 is: 98,562.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,851.07 : 181,955.36 = 71,421.72 : x
  2. Step 2: Convert to fraction form
    131,851.07/181,955.36 = 71,421.72/x
  3. Step 3: Cross multiply
    131,851.07x = 181,955.36 × 71,421.72
  4. Step 4: Simplify right side
    131,851.07x = 12,995,564,210.06
  5. Step 5: Solve for x
    x = 12,995,564,210.06/131,851.07
  6. Step 6: Final answer
    x = 98,562.44

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.