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Finding the Fourth Proportional to 140,355.72, 210,526.83 and 51,603.08

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Solution

The fourth proportional to 140,355.72, 210,526.83 and 51,603.08 is: 77,402.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,355.72 : 210,526.83 = 51,603.08 : x
  2. Step 2: Convert to fraction form
    140,355.72/210,526.83 = 51,603.08/x
  3. Step 3: Cross multiply
    140,355.72x = 210,526.83 × 51,603.08
  4. Step 4: Simplify right side
    140,355.72x = 10,863,831,798.00
  5. Step 5: Solve for x
    x = 10,863,831,798.00/140,355.72
  6. Step 6: Final answer
    x = 77,402.13

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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.