Home / 121,314,009.60-181,971,014.40-99,772,934.40

Finding the Fourth Proportional to 121,314,009.60, 181,971,014.40 and 99,772,934.40

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Solution

The fourth proportional to 121,314,009.60, 181,971,014.40 and 99,772,934.40 is: 149,659,401.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,314,009.60 : 181,971,014.40 = 99,772,934.40 : x
  2. Step 2: Convert to fraction form
    121,314,009.60/181,971,014.40 = 99,772,934.40/x
  3. Step 3: Cross multiply
    121,314,009.60x = 181,971,014.40 × 99,772,934.40
  4. Step 4: Simplify right side
    121,314,009.60x = 18,155,782,082,432,656
  5. Step 5: Solve for x
    x = 18,155,782,082,432,656/121,314,009.60
  6. Step 6: Final answer
    x = 149,659,401.60

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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.