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Finding the Fourth Proportional to 98,130.80, 147,215.40 and 41,970.80

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Solution

The fourth proportional to 98,130.80, 147,215.40 and 41,970.80 is: 62,964.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,130.80 : 147,215.40 = 41,970.80 : x
  2. Step 2: Convert to fraction form
    98,130.80/147,215.40 = 41,970.80/x
  3. Step 3: Cross multiply
    98,130.80x = 147,215.40 × 41,970.80
  4. Step 4: Simplify right side
    98,130.80x = 6,178,748,110.32
  5. Step 5: Solve for x
    x = 6,178,748,110.32/98,130.80
  6. Step 6: Final answer
    x = 62,964.41

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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.