Home / 118,424.32-163,420.40-64,706.80

Finding the Fourth Proportional to 118,424.32, 163,420.40 and 64,706.80

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Solution

The fourth proportional to 118,424.32, 163,420.40 and 64,706.80 is: 89,292.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,424.32 : 163,420.40 = 64,706.80 : x
  2. Step 2: Convert to fraction form
    118,424.32/163,420.40 = 64,706.80/x
  3. Step 3: Cross multiply
    118,424.32x = 163,420.40 × 64,706.80
  4. Step 4: Simplify right side
    118,424.32x = 10,574,411,138.72
  5. Step 5: Solve for x
    x = 10,574,411,138.72/118,424.32
  6. Step 6: Final answer
    x = 89,292.56

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1.5x scale

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.