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Finding the Fourth Proportional to 78,299,430.40, 117,449,145.60 and 78,299,430.40

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Solution

The fourth proportional to 78,299,430.40, 117,449,145.60 and 78,299,430.40 is: 117,449,145.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,299,430.40 : 117,449,145.60 = 78,299,430.40 : x
  2. Step 2: Convert to fraction form
    78,299,430.40/117,449,145.60 = 78,299,430.40/x
  3. Step 3: Cross multiply
    78,299,430.40x = 117,449,145.60 × 78,299,430.40
  4. Step 4: Simplify right side
    78,299,430.40x = 9,196,201,201,446,666
  5. Step 5: Solve for x
    x = 9,196,201,201,446,666/78,299,430.40
  6. Step 6: Final answer
    x = 117,449,145.60

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1.5x scale

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.