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Finding the Fourth Proportional to 81,687,200.40, 114,649,058.70 and 81,687,200.40

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Solution

The fourth proportional to 81,687,200.40, 114,649,058.70 and 81,687,200.40 is: 114,649,058.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,687,200.40 : 114,649,058.70 = 81,687,200.40 : x
  2. Step 2: Convert to fraction form
    81,687,200.40/114,649,058.70 = 81,687,200.40/x
  3. Step 3: Cross multiply
    81,687,200.40x = 114,649,058.70 × 81,687,200.40
  4. Step 4: Simplify right side
    81,687,200.40x = 9,365,360,633,698,264
  5. Step 5: Solve for x
    x = 9,365,360,633,698,264/81,687,200.40
  6. Step 6: Final answer
    x = 114,649,058.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.