Home / 145,165,685.71-217,816,628.33-72,388,141.76

Finding the Fourth Proportional to 145,165,685.71, 217,816,628.33 and 72,388,141.76

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Solution

The fourth proportional to 145,165,685.71, 217,816,628.33 and 72,388,141.76 is: 108,616,171.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,165,685.71 : 217,816,628.33 = 72,388,141.76 : x
  2. Step 2: Convert to fraction form
    145,165,685.71/217,816,628.33 = 72,388,141.76/x
  3. Step 3: Cross multiply
    145,165,685.71x = 217,816,628.33 × 72,388,141.76
  4. Step 4: Simplify right side
    145,165,685.71x = 15,767,340,969,554,516
  5. Step 5: Solve for x
    x = 15,767,340,969,554,516/145,165,685.71
  6. Step 6: Final answer
    x = 108,616,171.19

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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.