Home / 142,376.16-196,483.20-78,718.08

Finding the Fourth Proportional to 142,376.16, 196,483.20 and 78,718.08

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Solution

The fourth proportional to 142,376.16, 196,483.20 and 78,718.08 is: 108,633.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,376.16 : 196,483.20 = 78,718.08 : x
  2. Step 2: Convert to fraction form
    142,376.16/196,483.20 = 78,718.08/x
  3. Step 3: Cross multiply
    142,376.16x = 196,483.20 × 78,718.08
  4. Step 4: Simplify right side
    142,376.16x = 15,466,780,256.26
  5. Step 5: Solve for x
    x = 15,466,780,256.26/142,376.16
  6. Step 6: Final answer
    x = 108,633.22

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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.