Home / 186,787,421.60-279,803,218.80-129,344,554.40

Finding the Fourth Proportional to 186,787,421.60, 279,803,218.80 and 129,344,554.40

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Solution

The fourth proportional to 186,787,421.60, 279,803,218.80 and 129,344,554.40 is: 193,755,138.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,787,421.60 : 279,803,218.80 = 129,344,554.40 : x
  2. Step 2: Convert to fraction form
    186,787,421.60/279,803,218.80 = 129,344,554.40/x
  3. Step 3: Cross multiply
    186,787,421.60x = 279,803,218.80 × 129,344,554.40
  4. Step 4: Simplify right side
    186,787,421.60x = 36,191,022,655,371,704
  5. Step 5: Solve for x
    x = 36,191,022,655,371,704/186,787,421.60
  6. Step 6: Final answer
    x = 193,755,138.04

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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.