Home / 210,123.45-314,896.07-90,036.65

Finding the Fourth Proportional to 210,123.45, 314,896.07 and 90,036.65

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Solution

The fourth proportional to 210,123.45, 314,896.07 and 90,036.65 is: 134,931.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,123.45 : 314,896.07 = 90,036.65 : x
  2. Step 2: Convert to fraction form
    210,123.45/314,896.07 = 90,036.65/x
  3. Step 3: Cross multiply
    210,123.45x = 314,896.07 × 90,036.65
  4. Step 4: Simplify right side
    210,123.45x = 28,352,186,671.93
  5. Step 5: Solve for x
    x = 28,352,186,671.93/210,123.45
  6. Step 6: Final answer
    x = 134,931.09

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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.