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Finding the Fourth Proportional to 159,807.80, 239,711.70 and 48,985.40

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Solution

The fourth proportional to 159,807.80, 239,711.70 and 48,985.40 is: 73,478.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,807.80 : 239,711.70 = 48,985.40 : x
  2. Step 2: Convert to fraction form
    159,807.80/239,711.70 = 48,985.40/x
  3. Step 3: Cross multiply
    159,807.80x = 239,711.70 × 48,985.40
  4. Step 4: Simplify right side
    159,807.80x = 11,742,373,509.18
  5. Step 5: Solve for x
    x = 11,742,373,509.18/159,807.80
  6. Step 6: Final answer
    x = 73,478.10

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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.