Home / 103,027.86-142,128.27-64,834.74

Finding the Fourth Proportional to 103,027.86, 142,128.27 and 64,834.74

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Solution

The fourth proportional to 103,027.86, 142,128.27 and 64,834.74 is: 89,440.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,027.86 : 142,128.27 = 64,834.74 : x
  2. Step 2: Convert to fraction form
    103,027.86/142,128.27 = 64,834.74/x
  3. Step 3: Cross multiply
    103,027.86x = 142,128.27 × 64,834.74
  4. Step 4: Simplify right side
    103,027.86x = 9,214,849,432.10
  5. Step 5: Solve for x
    x = 9,214,849,432.10/103,027.86
  6. Step 6: Final answer
    x = 89,440.37

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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.