Home / 142,148,025.09-196,165,572.39-83,411,668.89

Finding the Fourth Proportional to 142,148,025.09, 196,165,572.39 and 83,411,668.89

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Solution

The fourth proportional to 142,148,025.09, 196,165,572.39 and 83,411,668.89 is: 115,108,864.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,148,025.09 : 196,165,572.39 = 83,411,668.89 : x
  2. Step 2: Convert to fraction form
    142,148,025.09/196,165,572.39 = 83,411,668.89/x
  3. Step 3: Cross multiply
    142,148,025.09x = 196,165,572.39 × 83,411,668.89
  4. Step 4: Simplify right side
    142,148,025.09x = 16,362,497,771,812,004
  5. Step 5: Solve for x
    x = 16,362,497,771,812,004/142,148,025.09
  6. Step 6: Final answer
    x = 115,108,864.59

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.