Home / 121,160,660.90-181,742,028.15-40,381,628.90

Finding the Fourth Proportional to 121,160,660.90, 181,742,028.15 and 40,381,628.90

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Solution

The fourth proportional to 121,160,660.90, 181,742,028.15 and 40,381,628.90 is: 60,572,788.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,160,660.90 : 181,742,028.15 = 40,381,628.90 : x
  2. Step 2: Convert to fraction form
    121,160,660.90/181,742,028.15 = 40,381,628.90/x
  3. Step 3: Cross multiply
    121,160,660.90x = 181,742,028.15 × 40,381,628.90
  4. Step 4: Simplify right side
    121,160,660.90x = 7,339,039,136,286,654
  5. Step 5: Solve for x
    x = 7,339,039,136,286,654/121,160,660.90
  6. Step 6: Final answer
    x = 60,572,788.91

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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.