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Finding the Fourth Proportional to 125,325.84, 172,947.30 and 70,877.28

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Solution

The fourth proportional to 125,325.84, 172,947.30 and 70,877.28 is: 97,809.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,325.84 : 172,947.30 = 70,877.28 : x
  2. Step 2: Convert to fraction form
    125,325.84/172,947.30 = 70,877.28/x
  3. Step 3: Cross multiply
    125,325.84x = 172,947.30 × 70,877.28
  4. Step 4: Simplify right side
    125,325.84x = 12,258,034,207.34
  5. Step 5: Solve for x
    x = 12,258,034,207.34/125,325.84
  6. Step 6: Final answer
    x = 97,809.31

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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.