Home / 145,681.60-201,044.40-82,021.72

Finding the Fourth Proportional to 145,681.60, 201,044.40 and 82,021.72

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Solution

The fourth proportional to 145,681.60, 201,044.40 and 82,021.72 is: 113,192.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,681.60 : 201,044.40 = 82,021.72 : x
  2. Step 2: Convert to fraction form
    145,681.60/201,044.40 = 82,021.72/x
  3. Step 3: Cross multiply
    145,681.60x = 201,044.40 × 82,021.72
  4. Step 4: Simplify right side
    145,681.60x = 16,490,007,484.37
  5. Step 5: Solve for x
    x = 16,490,007,484.37/145,681.60
  6. Step 6: Final answer
    x = 113,192.11

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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.