Home / 102,507.40-153,782.70-43,312.60

Finding the Fourth Proportional to 102,507.40, 153,782.70 and 43,312.60

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Solution

The fourth proportional to 102,507.40, 153,782.70 and 43,312.60 is: 64,978.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,507.40 : 153,782.70 = 43,312.60 : x
  2. Step 2: Convert to fraction form
    102,507.40/153,782.70 = 43,312.60/x
  3. Step 3: Cross multiply
    102,507.40x = 153,782.70 × 43,312.60
  4. Step 4: Simplify right side
    102,507.40x = 6,660,728,572.02
  5. Step 5: Solve for x
    x = 6,660,728,572.02/102,507.40
  6. Step 6: Final answer
    x = 64,978.03

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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.