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Finding the Fourth Proportional to 98,245.80, 147,332.70 and 31,703.40

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Solution

The fourth proportional to 98,245.80, 147,332.70 and 31,703.40 is: 47,543.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,245.80 : 147,332.70 = 31,703.40 : x
  2. Step 2: Convert to fraction form
    98,245.80/147,332.70 = 31,703.40/x
  3. Step 3: Cross multiply
    98,245.80x = 147,332.70 × 31,703.40
  4. Step 4: Simplify right side
    98,245.80x = 4,670,947,521.18
  5. Step 5: Solve for x
    x = 4,670,947,521.18/98,245.80
  6. Step 6: Final answer
    x = 47,543.48

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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.