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Finding the Fourth Proportional to 164,886.70, 247,038.45 and 139,809.10

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Solution

The fourth proportional to 164,886.70, 247,038.45 and 139,809.10 is: 209,466.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    164,886.70 : 247,038.45 = 139,809.10 : x
  2. Step 2: Convert to fraction form
    164,886.70/247,038.45 = 139,809.10/x
  3. Step 3: Cross multiply
    164,886.70x = 247,038.45 × 139,809.10
  4. Step 4: Simplify right side
    164,886.70x = 34,538,223,359.90
  5. Step 5: Solve for x
    x = 34,538,223,359.90/164,886.70
  6. Step 6: Final answer
    x = 209,466.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.