Home / 163,395.07-245,302.50-125,978.91

Finding the Fourth Proportional to 163,395.07, 245,302.50 and 125,978.91

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Solution

The fourth proportional to 163,395.07, 245,302.50 and 125,978.91 is: 189,130.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,395.07 : 245,302.50 = 125,978.91 : x
  2. Step 2: Convert to fraction form
    163,395.07/245,302.50 = 125,978.91/x
  3. Step 3: Cross multiply
    163,395.07x = 245,302.50 × 125,978.91
  4. Step 4: Simplify right side
    163,395.07x = 30,902,939,713.87
  5. Step 5: Solve for x
    x = 30,902,939,713.87/163,395.07
  6. Step 6: Final answer
    x = 189,130.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.