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Finding the Fourth Proportional to 159,573.60, 239,068.80 and 129,830.40

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Solution

The fourth proportional to 159,573.60, 239,068.80 and 129,830.40 is: 194,508.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,573.60 : 239,068.80 = 129,830.40 : x
  2. Step 2: Convert to fraction form
    159,573.60/239,068.80 = 129,830.40/x
  3. Step 3: Cross multiply
    159,573.60x = 239,068.80 × 129,830.40
  4. Step 4: Simplify right side
    159,573.60x = 31,038,397,931.52
  5. Step 5: Solve for x
    x = 31,038,397,931.52/159,573.60
  6. Step 6: Final answer
    x = 194,508.35

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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.