Home / 121,206.18-181,892.28-42,320.34

Finding the Fourth Proportional to 121,206.18, 181,892.28 and 42,320.34

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Solution

The fourth proportional to 121,206.18, 181,892.28 and 42,320.34 is: 63,509.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,206.18 : 181,892.28 = 42,320.34 : x
  2. Step 2: Convert to fraction form
    121,206.18/181,892.28 = 42,320.34/x
  3. Step 3: Cross multiply
    121,206.18x = 181,892.28 × 42,320.34
  4. Step 4: Simplify right side
    121,206.18x = 7,697,743,132.98
  5. Step 5: Solve for x
    x = 7,697,743,132.98/121,206.18
  6. Step 6: Final answer
    x = 63,509.49

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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.