Home / 190,780,015.20-286,207,347.60-81,604,975.20

Finding the Fourth Proportional to 190,780,015.20, 286,207,347.60 and 81,604,975.20

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Solution

The fourth proportional to 190,780,015.20, 286,207,347.60 and 81,604,975.20 is: 122,423,428.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,780,015.20 : 286,207,347.60 = 81,604,975.20 : x
  2. Step 2: Convert to fraction form
    190,780,015.20/286,207,347.60 = 81,604,975.20/x
  3. Step 3: Cross multiply
    190,780,015.20x = 286,207,347.60 × 81,604,975.20
  4. Step 4: Simplify right side
    190,780,015.20x = 23,355,943,502,955,784
  5. Step 5: Solve for x
    x = 23,355,943,502,955,784/190,780,015.20
  6. Step 6: Final answer
    x = 122,423,428.25

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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.