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Finding the Fourth Proportional to 210,123.95, 289,969.70 and 119,479.93

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Solution

The fourth proportional to 210,123.95, 289,969.70 and 119,479.93 is: 164,881.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,123.95 : 289,969.70 = 119,479.93 : x
  2. Step 2: Convert to fraction form
    210,123.95/289,969.70 = 119,479.93/x
  3. Step 3: Cross multiply
    210,123.95x = 289,969.70 × 119,479.93
  4. Step 4: Simplify right side
    210,123.95x = 34,645,559,884.35
  5. Step 5: Solve for x
    x = 34,645,559,884.35/210,123.95
  6. Step 6: Final answer
    x = 164,881.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.