Home / 121,314,564.10-181,971,846.15-86,877,187.30

Finding the Fourth Proportional to 121,314,564.10, 181,971,846.15 and 86,877,187.30

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Solution

The fourth proportional to 121,314,564.10, 181,971,846.15 and 86,877,187.30 is: 130,315,780.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314,564.10 : 181,971,846.15 = 86,877,187.30 : x
  2. Step 2: Convert to fraction form
    121,314,564.10/181,971,846.15 = 86,877,187.30/x
  3. Step 3: Cross multiply
    121,314,564.10x = 181,971,846.15 × 86,877,187.30
  4. Step 4: Simplify right side
    121,314,564.10x = 15,809,202,161,300,334
  5. Step 5: Solve for x
    x = 15,809,202,161,300,334/121,314,564.10
  6. Step 6: Final answer
    x = 130,315,780.95

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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.