Home / 121,314,573.60-181,971,860.40-86,877,196.80

Finding the Fourth Proportional to 121,314,573.60, 181,971,860.40 and 86,877,196.80

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Solution

The fourth proportional to 121,314,573.60, 181,971,860.40 and 86,877,196.80 is: 130,315,795.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314,573.60 : 181,971,860.40 = 86,877,196.80 : x
  2. Step 2: Convert to fraction form
    121,314,573.60/181,971,860.40 = 86,877,196.80/x
  3. Step 3: Cross multiply
    121,314,573.60x = 181,971,860.40 × 86,877,196.80
  4. Step 4: Simplify right side
    121,314,573.60x = 15,809,205,128,032,926
  5. Step 5: Solve for x
    x = 15,809,205,128,032,926/121,314,573.60
  6. Step 6: Final answer
    x = 130,315,795.20

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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.