Home / 89,877.40-134,816.10-72,381.40

Finding the Fourth Proportional to 89,877.40, 134,816.10 and 72,381.40

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Solution

The fourth proportional to 89,877.40, 134,816.10 and 72,381.40 is: 108,572.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,877.40 : 134,816.10 = 72,381.40 : x
  2. Step 2: Convert to fraction form
    89,877.40/134,816.10 = 72,381.40/x
  3. Step 3: Cross multiply
    89,877.40x = 134,816.10 × 72,381.40
  4. Step 4: Simplify right side
    89,877.40x = 9,758,178,060.54
  5. Step 5: Solve for x
    x = 9,758,178,060.54/89,877.40
  6. Step 6: Final answer
    x = 108,572.10

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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.