Home / 83,015,711.20-124,187,643.60-72,938,015.20

Finding the Fourth Proportional to 83,015,711.20, 124,187,643.60 and 72,938,015.20

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Solution

The fourth proportional to 83,015,711.20, 124,187,643.60 and 72,938,015.20 is: 109,111,879.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,015,711.20 : 124,187,643.60 = 72,938,015.20 : x
  2. Step 2: Convert to fraction form
    83,015,711.20/124,187,643.60 = 72,938,015.20/x
  3. Step 3: Cross multiply
    83,015,711.20x = 124,187,643.60 × 72,938,015.20
  4. Step 4: Simplify right side
    83,015,711.20x = 9,058,000,236,548,982
  5. Step 5: Solve for x
    x = 9,058,000,236,548,982/83,015,711.20
  6. Step 6: Final answer
    x = 109,111,879.01

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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.