Home / 145,115.10-200,300.58-87,754.50

Finding the Fourth Proportional to 145,115.10, 200,300.58 and 87,754.50

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Solution

The fourth proportional to 145,115.10, 200,300.58 and 87,754.50 is: 121,126.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,115.10 : 200,300.58 = 87,754.50 : x
  2. Step 2: Convert to fraction form
    145,115.10/200,300.58 = 87,754.50/x
  3. Step 3: Cross multiply
    145,115.10x = 200,300.58 × 87,754.50
  4. Step 4: Simplify right side
    145,115.10x = 17,577,277,247.61
  5. Step 5: Solve for x
    x = 17,577,277,247.61/145,115.10
  6. Step 6: Final answer
    x = 121,126.45

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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.