Home / 105,152.18-145,112.21-57,407.54

Finding the Fourth Proportional to 105,152.18, 145,112.21 and 57,407.54

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Solution

The fourth proportional to 105,152.18, 145,112.21 and 57,407.54 is: 79,223.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,152.18 : 145,112.21 = 57,407.54 : x
  2. Step 2: Convert to fraction form
    105,152.18/145,112.21 = 57,407.54/x
  3. Step 3: Cross multiply
    105,152.18x = 145,112.21 × 57,407.54
  4. Step 4: Simplify right side
    105,152.18x = 8,330,533,987.46
  5. Step 5: Solve for x
    x = 8,330,533,987.46/105,152.18
  6. Step 6: Final answer
    x = 79,223.60

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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.