Home / 121,300,039.20-181,572,145.20-87,287,815.20

Finding the Fourth Proportional to 121,300,039.20, 181,572,145.20 and 87,287,815.20

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Solution

The fourth proportional to 121,300,039.20, 181,572,145.20 and 87,287,815.20 is: 130,659,775.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,300,039.20 : 181,572,145.20 = 87,287,815.20 : x
  2. Step 2: Convert to fraction form
    121,300,039.20/181,572,145.20 = 87,287,815.20/x
  3. Step 3: Cross multiply
    121,300,039.20x = 181,572,145.20 × 87,287,815.20
  4. Step 4: Simplify right side
    121,300,039.20x = 15,849,035,855,685,166
  5. Step 5: Solve for x
    x = 15,849,035,855,685,166/121,300,039.20
  6. Step 6: Final answer
    x = 130,659,775.22

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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.