Home / 99,397.72-137,172.63-56,964.45

Finding the Fourth Proportional to 99,397.72, 137,172.63 and 56,964.45

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Solution

The fourth proportional to 99,397.72, 137,172.63 and 56,964.45 is: 78,613.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,397.72 : 137,172.63 = 56,964.45 : x
  2. Step 2: Convert to fraction form
    99,397.72/137,172.63 = 56,964.45/x
  3. Step 3: Cross multiply
    99,397.72x = 137,172.63 × 56,964.45
  4. Step 4: Simplify right side
    99,397.72x = 7,813,963,423.00
  5. Step 5: Solve for x
    x = 7,813,963,423.00/99,397.72
  6. Step 6: Final answer
    x = 78,613.11

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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.