Home / 121,314,510.60-181,971,765.90-86,877,133.80

Finding the Fourth Proportional to 121,314,510.60, 181,971,765.90 and 86,877,133.80

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Solution

The fourth proportional to 121,314,510.60, 181,971,765.90 and 86,877,133.80 is: 130,315,700.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314,510.60 : 181,971,765.90 = 86,877,133.80 : x
  2. Step 2: Convert to fraction form
    121,314,510.60/181,971,765.90 = 86,877,133.80/x
  3. Step 3: Cross multiply
    121,314,510.60x = 181,971,765.90 × 86,877,133.80
  4. Step 4: Simplify right side
    121,314,510.60x = 15,809,185,453,916,578
  5. Step 5: Solve for x
    x = 15,809,185,453,916,578/121,314,510.60
  6. Step 6: Final answer
    x = 130,315,700.70

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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.