Home / 84,251,013.40-126,376,520.10-70,646,123.80

Finding the Fourth Proportional to 84,251,013.40, 126,376,520.10 and 70,646,123.80

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Solution

The fourth proportional to 84,251,013.40, 126,376,520.10 and 70,646,123.80 is: 105,969,185.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,251,013.40 : 126,376,520.10 = 70,646,123.80 : x
  2. Step 2: Convert to fraction form
    84,251,013.40/126,376,520.10 = 70,646,123.80/x
  3. Step 3: Cross multiply
    84,251,013.40x = 126,376,520.10 × 70,646,123.80
  4. Step 4: Simplify right side
    84,251,013.40x = 8,928,011,284,397,788
  5. Step 5: Solve for x
    x = 8,928,011,284,397,788/84,251,013.40
  6. Step 6: Final answer
    x = 105,969,185.70

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1.5x scale

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.