Home / 129,038,973.40-193,558,460.10-81,263,229.40

Finding the Fourth Proportional to 129,038,973.40, 193,558,460.10 and 81,263,229.40

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Solution

The fourth proportional to 129,038,973.40, 193,558,460.10 and 81,263,229.40 is: 121,894,844.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,038,973.40 : 193,558,460.10 = 81,263,229.40 : x
  2. Step 2: Convert to fraction form
    129,038,973.40/193,558,460.10 = 81,263,229.40/x
  3. Step 3: Cross multiply
    129,038,973.40x = 193,558,460.10 × 81,263,229.40
  4. Step 4: Simplify right side
    129,038,973.40x = 15,729,185,545,417,048
  5. Step 5: Solve for x
    x = 15,729,185,545,417,048/129,038,973.40
  6. Step 6: Final answer
    x = 121,894,844.10

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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.