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Finding the Fourth Proportional to 102,532.40, 153,798.60 and 47,128.40

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Solution

The fourth proportional to 102,532.40, 153,798.60 and 47,128.40 is: 70,692.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,532.40 : 153,798.60 = 47,128.40 : x
  2. Step 2: Convert to fraction form
    102,532.40/153,798.60 = 47,128.40/x
  3. Step 3: Cross multiply
    102,532.40x = 153,798.60 × 47,128.40
  4. Step 4: Simplify right side
    102,532.40x = 7,248,281,940.24
  5. Step 5: Solve for x
    x = 7,248,281,940.24/102,532.40
  6. Step 6: Final answer
    x = 70,692.60

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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.