Home / 91,054,043.40-136,581,065.10-81,488,105.40

Finding the Fourth Proportional to 91,054,043.40, 136,581,065.10 and 81,488,105.40

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Solution

The fourth proportional to 91,054,043.40, 136,581,065.10 and 81,488,105.40 is: 122,232,158.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,054,043.40 : 136,581,065.10 = 81,488,105.40 : x
  2. Step 2: Convert to fraction form
    91,054,043.40/136,581,065.10 = 81,488,105.40/x
  3. Step 3: Cross multiply
    91,054,043.40x = 136,581,065.10 × 81,488,105.40
  4. Step 4: Simplify right side
    91,054,043.40x = 11,129,732,228,513,062
  5. Step 5: Solve for x
    x = 11,129,732,228,513,062/91,054,043.40
  6. Step 6: Final answer
    x = 122,232,158.10

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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.