Home / 121,128,711.30-181,716,686.55-52,041,381.30

Finding the Fourth Proportional to 121,128,711.30, 181,716,686.55 and 52,041,381.30

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Solution

The fourth proportional to 121,128,711.30, 181,716,686.55 and 52,041,381.30 is: 78,072,219.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,128,711.30 : 181,716,686.55 = 52,041,381.30 : x
  2. Step 2: Convert to fraction form
    121,128,711.30/181,716,686.55 = 52,041,381.30/x
  3. Step 3: Cross multiply
    121,128,711.30x = 181,716,686.55 × 52,041,381.30
  4. Step 4: Simplify right side
    121,128,711.30x = 9,456,787,373,321,132
  5. Step 5: Solve for x
    x = 9,456,787,373,321,132/121,128,711.30
  6. Step 6: Final answer
    x = 78,072,219.81

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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.