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Finding the Fourth Proportional to 99,908.96, 137,897.88 and 57,492.32

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Solution

The fourth proportional to 99,908.96, 137,897.88 and 57,492.32 is: 79,352.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,908.96 : 137,897.88 = 57,492.32 : x
  2. Step 2: Convert to fraction form
    99,908.96/137,897.88 = 57,492.32/x
  3. Step 3: Cross multiply
    99,908.96x = 137,897.88 × 57,492.32
  4. Step 4: Simplify right side
    99,908.96x = 7,928,069,044.28
  5. Step 5: Solve for x
    x = 7,928,069,044.28/99,908.96
  6. Step 6: Final answer
    x = 79,352.93

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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.