Home / 145,704.67-201,045.78-81,172.35

Finding the Fourth Proportional to 145,704.67, 201,045.78 and 81,172.35

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Solution

The fourth proportional to 145,704.67, 201,045.78 and 81,172.35 is: 112,002.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,704.67 : 201,045.78 = 81,172.35 : x
  2. Step 2: Convert to fraction form
    145,704.67/201,045.78 = 81,172.35/x
  3. Step 3: Cross multiply
    145,704.67x = 201,045.78 × 81,172.35
  4. Step 4: Simplify right side
    145,704.67x = 16,319,358,420.18
  5. Step 5: Solve for x
    x = 16,319,358,420.18/145,704.67
  6. Step 6: Final answer
    x = 112,002.99

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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.