Home / 105,430.40-158,145.60-26,547.20

Finding the Fourth Proportional to 105,430.40, 158,145.60 and 26,547.20

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Solution

The fourth proportional to 105,430.40, 158,145.60 and 26,547.20 is: 39,820.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,430.40 : 158,145.60 = 26,547.20 : x
  2. Step 2: Convert to fraction form
    105,430.40/158,145.60 = 26,547.20/x
  3. Step 3: Cross multiply
    105,430.40x = 158,145.60 × 26,547.20
  4. Step 4: Simplify right side
    105,430.40x = 4,198,322,872.32
  5. Step 5: Solve for x
    x = 4,198,322,872.32/105,430.40
  6. Step 6: Final answer
    x = 39,820.80

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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.