Home / 157,055.12-216,730.44-85,432.40

Finding the Fourth Proportional to 157,055.12, 216,730.44 and 85,432.40

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Solution

The fourth proportional to 157,055.12, 216,730.44 and 85,432.40 is: 117,893.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,055.12 : 216,730.44 = 85,432.40 : x
  2. Step 2: Convert to fraction form
    157,055.12/216,730.44 = 85,432.40/x
  3. Step 3: Cross multiply
    157,055.12x = 216,730.44 × 85,432.40
  4. Step 4: Simplify right side
    157,055.12x = 18,515,801,642.26
  5. Step 5: Solve for x
    x = 18,515,801,642.26/157,055.12
  6. Step 6: Final answer
    x = 117,893.65

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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.