Home / 210,011.70-314,981.10-76,823.40

Finding the Fourth Proportional to 210,011.70, 314,981.10 and 76,823.40

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Solution

The fourth proportional to 210,011.70, 314,981.10 and 76,823.40 is: 115,221.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,011.70 : 314,981.10 = 76,823.40 : x
  2. Step 2: Convert to fraction form
    210,011.70/314,981.10 = 76,823.40/x
  3. Step 3: Cross multiply
    210,011.70x = 314,981.10 × 76,823.40
  4. Step 4: Simplify right side
    210,011.70x = 24,197,919,037.74
  5. Step 5: Solve for x
    x = 24,197,919,037.74/210,011.70
  6. Step 6: Final answer
    x = 115,221.77

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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.