Home / 153,729.33-212,145.93-85,746.25

Finding the Fourth Proportional to 153,729.33, 212,145.93 and 85,746.25

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Solution

The fourth proportional to 153,729.33, 212,145.93 and 85,746.25 is: 118,329.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,729.33 : 212,145.93 = 85,746.25 : x
  2. Step 2: Convert to fraction form
    153,729.33/212,145.93 = 85,746.25/x
  3. Step 3: Cross multiply
    153,729.33x = 212,145.93 × 85,746.25
  4. Step 4: Simplify right side
    153,729.33x = 18,190,717,950.26
  5. Step 5: Solve for x
    x = 18,190,717,950.26/153,729.33
  6. Step 6: Final answer
    x = 118,329.52

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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.