Home / 142,852.04-197,131.52-78,319.94

Finding the Fourth Proportional to 142,852.04, 197,131.52 and 78,319.94

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Solution

The fourth proportional to 142,852.04, 197,131.52 and 78,319.94 is: 108,079.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,852.04 : 197,131.52 = 78,319.94 : x
  2. Step 2: Convert to fraction form
    142,852.04/197,131.52 = 78,319.94/x
  3. Step 3: Cross multiply
    142,852.04x = 197,131.52 × 78,319.94
  4. Step 4: Simplify right side
    142,852.04x = 15,439,328,818.51
  5. Step 5: Solve for x
    x = 15,439,328,818.51/142,852.04
  6. Step 6: Final answer
    x = 108,079.16

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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.