Home / 121,125.48-181,689.03-42,239.67

Finding the Fourth Proportional to 121,125.48, 181,689.03 and 42,239.67

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Solution

The fourth proportional to 121,125.48, 181,689.03 and 42,239.67 is: 63,359.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,125.48 : 181,689.03 = 42,239.67 : x
  2. Step 2: Convert to fraction form
    121,125.48/181,689.03 = 42,239.67/x
  3. Step 3: Cross multiply
    121,125.48x = 181,689.03 × 42,239.67
  4. Step 4: Simplify right side
    121,125.48x = 7,674,484,669.82
  5. Step 5: Solve for x
    x = 7,674,484,669.82/121,125.48
  6. Step 6: Final answer
    x = 63,359.79

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1.5x scale

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.