Home / 105,703.20-145,877.16-69,830.28

Finding the Fourth Proportional to 105,703.20, 145,877.16 and 69,830.28

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Solution

The fourth proportional to 105,703.20, 145,877.16 and 69,830.28 is: 96,370.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,703.20 : 145,877.16 = 69,830.28 : x
  2. Step 2: Convert to fraction form
    105,703.20/145,877.16 = 69,830.28/x
  3. Step 3: Cross multiply
    105,703.20x = 145,877.16 × 69,830.28
  4. Step 4: Simplify right side
    105,703.20x = 10,186,642,928.40
  5. Step 5: Solve for x
    x = 10,186,642,928.40/105,703.20
  6. Step 6: Final answer
    x = 96,370.24

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.