Home / 105,330.64-157,980.34-38,755.20

Finding the Fourth Proportional to 105,330.64, 157,980.34 and 38,755.20

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Solution

The fourth proportional to 105,330.64, 157,980.34 and 38,755.20 is: 58,127.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,330.64 : 157,980.34 = 38,755.20 : x
  2. Step 2: Convert to fraction form
    105,330.64/157,980.34 = 38,755.20/x
  3. Step 3: Cross multiply
    105,330.64x = 157,980.34 × 38,755.20
  4. Step 4: Simplify right side
    105,330.64x = 6,122,559,672.77
  5. Step 5: Solve for x
    x = 6,122,559,672.77/105,330.64
  6. Step 6: Final answer
    x = 58,127.05

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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.