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Finding the Fourth Proportional to 103,053.60, 154,490.40 and 39,916.80

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Solution

The fourth proportional to 103,053.60, 154,490.40 and 39,916.80 is: 59,840.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,053.60 : 154,490.40 = 39,916.80 : x
  2. Step 2: Convert to fraction form
    103,053.60/154,490.40 = 39,916.80/x
  3. Step 3: Cross multiply
    103,053.60x = 154,490.40 × 39,916.80
  4. Step 4: Simplify right side
    103,053.60x = 6,166,762,398.72
  5. Step 5: Solve for x
    x = 6,166,762,398.72/103,053.60
  6. Step 6: Final answer
    x = 59,840.34

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1.5x scale

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.