Home / 191,488,857.57-286,820,719.74-129,739,218.75

Finding the Fourth Proportional to 191,488,857.57, 286,820,719.74 and 129,739,218.75

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Solution

The fourth proportional to 191,488,857.57, 286,820,719.74 and 129,739,218.75 is: 194,329,302.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,488,857.57 : 286,820,719.74 = 129,739,218.75 : x
  2. Step 2: Convert to fraction form
    191,488,857.57/286,820,719.74 = 129,739,218.75/x
  3. Step 3: Cross multiply
    191,488,857.57x = 286,820,719.74 × 129,739,218.75
  4. Step 4: Simplify right side
    191,488,857.57x = 37,211,896,100,380,304
  5. Step 5: Solve for x
    x = 37,211,896,100,380,304/191,488,857.57
  6. Step 6: Final answer
    x = 194,329,302.36

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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.