Home / 145,838.13-201,256.75-78,770.13

Finding the Fourth Proportional to 145,838.13, 201,256.75 and 78,770.13

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Solution

The fourth proportional to 145,838.13, 201,256.75 and 78,770.13 is: 108,702.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,838.13 : 201,256.75 = 78,770.13 : x
  2. Step 2: Convert to fraction form
    145,838.13/201,256.75 = 78,770.13/x
  3. Step 3: Cross multiply
    145,838.13x = 201,256.75 × 78,770.13
  4. Step 4: Simplify right side
    145,838.13x = 15,853,019,354.59
  5. Step 5: Solve for x
    x = 15,853,019,354.59/145,838.13
  6. Step 6: Final answer
    x = 108,702.85

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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.