Home / 145,814.28-201,223.68-78,746.28

Finding the Fourth Proportional to 145,814.28, 201,223.68 and 78,746.28

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Solution

The fourth proportional to 145,814.28, 201,223.68 and 78,746.28 is: 108,669.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,814.28 : 201,223.68 = 78,746.28 : x
  2. Step 2: Convert to fraction form
    145,814.28/201,223.68 = 78,746.28/x
  3. Step 3: Cross multiply
    145,814.28x = 201,223.68 × 78,746.28
  4. Step 4: Simplify right side
    145,814.28x = 15,845,616,247.91
  5. Step 5: Solve for x
    x = 15,845,616,247.91/145,814.28
  6. Step 6: Final answer
    x = 108,669.85

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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.