Home / 105,132.03-145,085.63-57,387.93

Finding the Fourth Proportional to 105,132.03, 145,085.63 and 57,387.93

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Solution

The fourth proportional to 105,132.03, 145,085.63 and 57,387.93 is: 79,197.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,132.03 : 145,085.63 = 57,387.93 : x
  2. Step 2: Convert to fraction form
    105,132.03/145,085.63 = 57,387.93/x
  3. Step 3: Cross multiply
    105,132.03x = 145,085.63 × 57,387.93
  4. Step 4: Simplify right side
    105,132.03x = 8,326,163,978.45
  5. Step 5: Solve for x
    x = 8,326,163,978.45/105,132.03
  6. Step 6: Final answer
    x = 79,197.21

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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.