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Finding the Fourth Proportional to 98,259.80, 147,389.70 and 56,658.20

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Solution

The fourth proportional to 98,259.80, 147,389.70 and 56,658.20 is: 84,987.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,259.80 : 147,389.70 = 56,658.20 : x
  2. Step 2: Convert to fraction form
    98,259.80/147,389.70 = 56,658.20/x
  3. Step 3: Cross multiply
    98,259.80x = 147,389.70 × 56,658.20
  4. Step 4: Simplify right side
    98,259.80x = 8,350,835,100.54
  5. Step 5: Solve for x
    x = 8,350,835,100.54/98,259.80
  6. Step 6: Final answer
    x = 84,987.30

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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.