Home / 126,055,013.40-189,082,520.10-77,375,017.80

Finding the Fourth Proportional to 126,055,013.40, 189,082,520.10 and 77,375,017.80

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Solution

The fourth proportional to 126,055,013.40, 189,082,520.10 and 77,375,017.80 is: 116,062,526.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,055,013.40 : 189,082,520.10 = 77,375,017.80 : x
  2. Step 2: Convert to fraction form
    126,055,013.40/189,082,520.10 = 77,375,017.80/x
  3. Step 3: Cross multiply
    126,055,013.40x = 189,082,520.10 × 77,375,017.80
  4. Step 4: Simplify right side
    126,055,013.40x = 14,630,263,358,406,356
  5. Step 5: Solve for x
    x = 14,630,263,358,406,356/126,055,013.40
  6. Step 6: Final answer
    x = 116,062,526.70

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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.