Home / 103,412.40-142,722.56-63,117.80

Finding the Fourth Proportional to 103,412.40, 142,722.56 and 63,117.80

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Solution

The fourth proportional to 103,412.40, 142,722.56 and 63,117.80 is: 87,110.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,412.40 : 142,722.56 = 63,117.80 : x
  2. Step 2: Convert to fraction form
    103,412.40/142,722.56 = 63,117.80/x
  3. Step 3: Cross multiply
    103,412.40x = 142,722.56 × 63,117.80
  4. Step 4: Simplify right side
    103,412.40x = 9,008,333,997.57
  5. Step 5: Solve for x
    x = 9,008,333,997.57/103,412.40
  6. Step 6: Final answer
    x = 87,110.77

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1.5x scale

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.