Home / 210,142.74-289,985.10-119,520.72

Finding the Fourth Proportional to 210,142.74, 289,985.10 and 119,520.72

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Solution

The fourth proportional to 210,142.74, 289,985.10 and 119,520.72 is: 164,931.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,142.74 : 289,985.10 = 119,520.72 : x
  2. Step 2: Convert to fraction form
    210,142.74/289,985.10 = 119,520.72/x
  3. Step 3: Cross multiply
    210,142.74x = 289,985.10 × 119,520.72
  4. Step 4: Simplify right side
    210,142.74x = 34,659,227,941.27
  5. Step 5: Solve for x
    x = 34,659,227,941.27/210,142.74
  6. Step 6: Final answer
    x = 164,931.84

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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.