Home / 120,315,902.90-180,473,854.35-55,745,821.40

Finding the Fourth Proportional to 120,315,902.90, 180,473,854.35 and 55,745,821.40

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Solution

The fourth proportional to 120,315,902.90, 180,473,854.35 and 55,745,821.40 is: 83,618,732.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,315,902.90 : 180,473,854.35 = 55,745,821.40 : x
  2. Step 2: Convert to fraction form
    120,315,902.90/180,473,854.35 = 55,745,821.40/x
  3. Step 3: Cross multiply
    120,315,902.90x = 180,473,854.35 × 55,745,821.40
  4. Step 4: Simplify right side
    120,315,902.90x = 10,060,663,251,964,712
  5. Step 5: Solve for x
    x = 10,060,663,251,964,712/120,315,902.90
  6. Step 6: Final answer
    x = 83,618,732.10

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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.