Home / 105,259.90-145,256.95-57,512.23

Finding the Fourth Proportional to 105,259.90, 145,256.95 and 57,512.23

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Solution

The fourth proportional to 105,259.90, 145,256.95 and 57,512.23 is: 79,365.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,259.90 : 145,256.95 = 57,512.23 : x
  2. Step 2: Convert to fraction form
    105,259.90/145,256.95 = 57,512.23/x
  3. Step 3: Cross multiply
    105,259.90x = 145,256.95 × 57,512.23
  4. Step 4: Simplify right side
    105,259.90x = 8,354,051,117.50
  5. Step 5: Solve for x
    x = 8,354,051,117.50/105,259.90
  6. Step 6: Final answer
    x = 79,365.94

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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.