Home / 99,564.84-137,398.41-57,130.02

Finding the Fourth Proportional to 99,564.84, 137,398.41 and 57,130.02

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Solution

The fourth proportional to 99,564.84, 137,398.41 and 57,130.02 is: 78,838.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,564.84 : 137,398.41 = 57,130.02 : x
  2. Step 2: Convert to fraction form
    99,564.84/137,398.41 = 57,130.02/x
  3. Step 3: Cross multiply
    99,564.84x = 137,398.41 × 57,130.02
  4. Step 4: Simplify right side
    99,564.84x = 7,849,573,911.27
  5. Step 5: Solve for x
    x = 7,849,573,911.27/99,564.84
  6. Step 6: Final answer
    x = 78,838.81

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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.