Home / 145,972.07-201,441.37-78,904.07

Finding the Fourth Proportional to 145,972.07, 201,441.37 and 78,904.07

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Solution

The fourth proportional to 145,972.07, 201,441.37 and 78,904.07 is: 108,887.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,972.07 : 201,441.37 = 78,904.07 : x
  2. Step 2: Convert to fraction form
    145,972.07/201,441.37 = 78,904.07/x
  3. Step 3: Cross multiply
    145,972.07x = 201,441.37 × 78,904.07
  4. Step 4: Simplify right side
    145,972.07x = 15,894,543,762.12
  5. Step 5: Solve for x
    x = 15,894,543,762.12/145,972.07
  6. Step 6: Final answer
    x = 108,887.57

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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.