Home / 208,018,668.68-287,070,408.45-118,708,834.43

Finding the Fourth Proportional to 208,018,668.68, 287,070,408.45 and 118,708,834.43

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Solution

The fourth proportional to 208,018,668.68, 287,070,408.45 and 118,708,834.43 is: 163,820,842.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,018,668.68 : 287,070,408.45 = 118,708,834.43 : x
  2. Step 2: Convert to fraction form
    208,018,668.68/287,070,408.45 = 118,708,834.43/x
  3. Step 3: Cross multiply
    208,018,668.68x = 287,070,408.45 × 118,708,834.43
  4. Step 4: Simplify right side
    208,018,668.68x = 34,077,793,587,161,200
  5. Step 5: Solve for x
    x = 34,077,793,587,161,200/208,018,668.68
  6. Step 6: Final answer
    x = 163,820,842.64

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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.