Home / 157,603.32-217,485-85,979.07

Finding the Fourth Proportional to 157,603.32, 217,485 and 85,979.07

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Solution

The fourth proportional to 157,603.32, 217,485 and 85,979.07 is: 118,646.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,603.32 : 217,485 = 85,979.07 : x
  2. Step 2: Convert to fraction form
    157,603.32/217,485 = 85,979.07/x
  3. Step 3: Cross multiply
    157,603.32x = 217,485 × 85,979.07
  4. Step 4: Simplify right side
    157,603.32x = 18,699,158,038.95
  5. Step 5: Solve for x
    x = 18,699,158,038.95/157,603.32
  6. Step 6: Final answer
    x = 118,646.98

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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.