Home / 210,089.18-315,133.77-76,915.46

Finding the Fourth Proportional to 210,089.18, 315,133.77 and 76,915.46

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Solution

The fourth proportional to 210,089.18, 315,133.77 and 76,915.46 is: 115,373.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,089.18 : 315,133.77 = 76,915.46 : x
  2. Step 2: Convert to fraction form
    210,089.18/315,133.77 = 76,915.46/x
  3. Step 3: Cross multiply
    210,089.18x = 315,133.77 × 76,915.46
  4. Step 4: Simplify right side
    210,089.18x = 24,238,657,305.42
  5. Step 5: Solve for x
    x = 24,238,657,305.42/210,089.18
  6. Step 6: Final answer
    x = 115,373.19

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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.