Home / 114,128.87-157,502.48-63,140.72

Finding the Fourth Proportional to 114,128.87, 157,502.48 and 63,140.72

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Solution

The fourth proportional to 114,128.87, 157,502.48 and 63,140.72 is: 87,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,128.87 : 157,502.48 = 63,140.72 : x
  2. Step 2: Convert to fraction form
    114,128.87/157,502.48 = 63,140.72/x
  3. Step 3: Cross multiply
    114,128.87x = 157,502.48 × 63,140.72
  4. Step 4: Simplify right side
    114,128.87x = 9,944,818,885.77
  5. Step 5: Solve for x
    x = 9,944,818,885.77/114,128.87
  6. Step 6: Final answer
    x = 87,136.75

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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.