Home / 142,121,638.80-213,182,458.20-86,878,346.85

Finding the Fourth Proportional to 142,121,638.80, 213,182,458.20 and 86,878,346.85

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Solution

The fourth proportional to 142,121,638.80, 213,182,458.20 and 86,878,346.85 is: 130,317,520.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,121,638.80 : 213,182,458.20 = 86,878,346.85 : x
  2. Step 2: Convert to fraction form
    142,121,638.80/213,182,458.20 = 86,878,346.85/x
  3. Step 3: Cross multiply
    142,121,638.80x = 213,182,458.20 × 86,878,346.85
  4. Step 4: Simplify right side
    142,121,638.80x = 18,520,939,545,835,224
  5. Step 5: Solve for x
    x = 18,520,939,545,835,224/142,121,638.80
  6. Step 6: Final answer
    x = 130,317,520.28

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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.