Home / 159,488,321-220,093,971.54-86,149,463.72

Finding the Fourth Proportional to 159,488,321, 220,093,971.54 and 86,149,463.72

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Solution

The fourth proportional to 159,488,321, 220,093,971.54 and 86,149,463.72 is: 118,886,307.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,488,321 : 220,093,971.54 = 86,149,463.72 : x
  2. Step 2: Convert to fraction form
    159,488,321/220,093,971.54 = 86,149,463.72/x
  3. Step 3: Cross multiply
    159,488,321x = 220,093,971.54 × 86,149,463.72
  4. Step 4: Simplify right side
    159,488,321x = 18,960,977,616,175,940
  5. Step 5: Solve for x
    x = 18,960,977,616,175,940/159,488,321
  6. Step 6: Final answer
    x = 118,886,307.77

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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.