Home / 103,353,331.20-155,029,996.80-72,742,329.60

Finding the Fourth Proportional to 103,353,331.20, 155,029,996.80 and 72,742,329.60

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Solution

The fourth proportional to 103,353,331.20, 155,029,996.80 and 72,742,329.60 is: 109,113,494.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,353,331.20 : 155,029,996.80 = 72,742,329.60 : x
  2. Step 2: Convert to fraction form
    103,353,331.20/155,029,996.80 = 72,742,329.60/x
  3. Step 3: Cross multiply
    103,353,331.20x = 155,029,996.80 × 72,742,329.60
  4. Step 4: Simplify right side
    103,353,331.20x = 11,277,243,125,112,546
  5. Step 5: Solve for x
    x = 11,277,243,125,112,546/103,353,331.20
  6. Step 6: Final answer
    x = 109,113,494.40

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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.