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Finding the Fourth Proportional to 124,698.60, 172,041.39 and 70,970.18

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Solution

The fourth proportional to 124,698.60, 172,041.39 and 70,970.18 is: 97,914.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,698.60 : 172,041.39 = 70,970.18 : x
  2. Step 2: Convert to fraction form
    124,698.60/172,041.39 = 70,970.18/x
  3. Step 3: Cross multiply
    124,698.60x = 172,041.39 × 70,970.18
  4. Step 4: Simplify right side
    124,698.60x = 12,209,807,555.54
  5. Step 5: Solve for x
    x = 12,209,807,555.54/124,698.60
  6. Step 6: Final answer
    x = 97,914.55

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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.