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Finding the Fourth Proportional to 131,700.58, 181,746.79 and 71,271.22

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Solution

The fourth proportional to 131,700.58, 181,746.79 and 71,271.22 is: 98,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,700.58 : 181,746.79 = 71,271.22 : x
  2. Step 2: Convert to fraction form
    131,700.58/181,746.79 = 71,271.22/x
  3. Step 3: Cross multiply
    131,700.58x = 181,746.79 × 71,271.22
  4. Step 4: Simplify right side
    131,700.58x = 12,953,315,454.38
  5. Step 5: Solve for x
    x = 12,953,315,454.38/131,700.58
  6. Step 6: Final answer
    x = 98,354.28

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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.