Home / 257,088.10-385,541.82-77,119.86

Finding the Fourth Proportional to 257,088.10, 385,541.82 and 77,119.86

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Solution

The fourth proportional to 257,088.10, 385,541.82 and 77,119.86 is: 115,652.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,088.10 : 385,541.82 = 77,119.86 : x
  2. Step 2: Convert to fraction form
    257,088.10/385,541.82 = 77,119.86/x
  3. Step 3: Cross multiply
    257,088.10x = 385,541.82 × 77,119.86
  4. Step 4: Simplify right side
    257,088.10x = 29,732,931,182.55
  5. Step 5: Solve for x
    x = 29,732,931,182.55/257,088.10
  6. Step 6: Final answer
    x = 115,652.69

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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.