Home / 99,421.02-137,206.91-56,982.29

Finding the Fourth Proportional to 99,421.02, 137,206.91 and 56,982.29

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Solution

The fourth proportional to 99,421.02, 137,206.91 and 56,982.29 is: 78,638.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,421.02 : 137,206.91 = 56,982.29 : x
  2. Step 2: Convert to fraction form
    99,421.02/137,206.91 = 56,982.29/x
  3. Step 3: Cross multiply
    99,421.02x = 137,206.91 × 56,982.29
  4. Step 4: Simplify right side
    99,421.02x = 7,818,363,392.05
  5. Step 5: Solve for x
    x = 7,818,363,392.05/99,421.02
  6. Step 6: Final answer
    x = 78,638.94

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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.