Home / 109,472.03-151,140.35-83,931.03

Finding the Fourth Proportional to 109,472.03, 151,140.35 and 83,931.03

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Solution

The fourth proportional to 109,472.03, 151,140.35 and 83,931.03 is: 115,877.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,472.03 : 151,140.35 = 83,931.03 : x
  2. Step 2: Convert to fraction form
    109,472.03/151,140.35 = 83,931.03/x
  3. Step 3: Cross multiply
    109,472.03x = 151,140.35 × 83,931.03
  4. Step 4: Simplify right side
    109,472.03x = 12,685,364,830.41
  5. Step 5: Solve for x
    x = 12,685,364,830.41/109,472.03
  6. Step 6: Final answer
    x = 115,877.69

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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.