Home / 142,128,049.20-213,192,073.80-61,349,017.20

Finding the Fourth Proportional to 142,128,049.20, 213,192,073.80 and 61,349,017.20

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Solution

The fourth proportional to 142,128,049.20, 213,192,073.80 and 61,349,017.20 is: 92,023,525.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,128,049.20 : 213,192,073.80 = 61,349,017.20 : x
  2. Step 2: Convert to fraction form
    142,128,049.20/213,192,073.80 = 61,349,017.20/x
  3. Step 3: Cross multiply
    142,128,049.20x = 213,192,073.80 × 61,349,017.20
  4. Step 4: Simplify right side
    142,128,049.20x = 13,079,124,202,459,870
  5. Step 5: Solve for x
    x = 13,079,124,202,459,870/142,128,049.20
  6. Step 6: Final answer
    x = 92,023,525.80

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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.