Home / 121,124,992.80-181,687,489.20-70,106,656.80

Finding the Fourth Proportional to 121,124,992.80, 181,687,489.20 and 70,106,656.80

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Solution

The fourth proportional to 121,124,992.80, 181,687,489.20 and 70,106,656.80 is: 105,159,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,124,992.80 : 181,687,489.20 = 70,106,656.80 : x
  2. Step 2: Convert to fraction form
    121,124,992.80/181,687,489.20 = 70,106,656.80/x
  3. Step 3: Cross multiply
    121,124,992.80x = 181,687,489.20 × 70,106,656.80
  4. Step 4: Simplify right side
    121,124,992.80x = 12,737,502,450,198,106
  5. Step 5: Solve for x
    x = 12,737,502,450,198,106/121,124,992.80
  6. Step 6: Final answer
    x = 105,159,985.20

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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.