Home / 142,121,640.30-213,182,460.45-86,878,348.35

Finding the Fourth Proportional to 142,121,640.30, 213,182,460.45 and 86,878,348.35

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Solution

The fourth proportional to 142,121,640.30, 213,182,460.45 and 86,878,348.35 is: 130,317,522.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,121,640.30 : 213,182,460.45 = 86,878,348.35 : x
  2. Step 2: Convert to fraction form
    142,121,640.30/213,182,460.45 = 86,878,348.35/x
  3. Step 3: Cross multiply
    142,121,640.30x = 213,182,460.45 × 86,878,348.35
  4. Step 4: Simplify right side
    142,121,640.30x = 18,520,940,061,085,196
  5. Step 5: Solve for x
    x = 18,520,940,061,085,196/142,121,640.30
  6. Step 6: Final answer
    x = 130,317,522.53

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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.