Home / 143,657.40-215,412.28-77,153.46

Finding the Fourth Proportional to 143,657.40, 215,412.28 and 77,153.46

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Solution

The fourth proportional to 143,657.40, 215,412.28 and 77,153.46 is: 115,690.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,657.40 : 215,412.28 = 77,153.46 : x
  2. Step 2: Convert to fraction form
    143,657.40/215,412.28 = 77,153.46/x
  3. Step 3: Cross multiply
    143,657.40x = 215,412.28 × 77,153.46
  4. Step 4: Simplify right side
    143,657.40x = 16,619,802,535.61
  5. Step 5: Solve for x
    x = 16,619,802,535.61/143,657.40
  6. Step 6: Final answer
    x = 115,690.54

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1.5x scale

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.