Home / 157,102.20-235,713.78-72,905.40

Finding the Fourth Proportional to 157,102.20, 235,713.78 and 72,905.40

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Solution

The fourth proportional to 157,102.20, 235,713.78 and 72,905.40 is: 109,386.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,102.20 : 235,713.78 = 72,905.40 : x
  2. Step 2: Convert to fraction form
    157,102.20/235,713.78 = 72,905.40/x
  3. Step 3: Cross multiply
    157,102.20x = 235,713.78 × 72,905.40
  4. Step 4: Simplify right side
    157,102.20x = 17,184,807,416.41
  5. Step 5: Solve for x
    x = 17,184,807,416.41/157,102.20
  6. Step 6: Final answer
    x = 109,386.17

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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.