Home / 131,749.05-181,814.13-71,319.69

Finding the Fourth Proportional to 131,749.05, 181,814.13 and 71,319.69

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Solution

The fourth proportional to 131,749.05, 181,814.13 and 71,319.69 is: 98,421.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,749.05 : 181,814.13 = 71,319.69 : x
  2. Step 2: Convert to fraction form
    131,749.05/181,814.13 = 71,319.69/x
  3. Step 3: Cross multiply
    131,749.05x = 181,814.13 × 71,319.69
  4. Step 4: Simplify right side
    131,749.05x = 12,966,927,389.22
  5. Step 5: Solve for x
    x = 12,966,927,389.22/131,749.05
  6. Step 6: Final answer
    x = 98,421.41

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1.5x scale

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.