Home / 142,593.55-196,779.10-78,931.35

Finding the Fourth Proportional to 142,593.55, 196,779.10 and 78,931.35

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Solution

The fourth proportional to 142,593.55, 196,779.10 and 78,931.35 is: 108,925.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,593.55 : 196,779.10 = 78,931.35 : x
  2. Step 2: Convert to fraction form
    142,593.55/196,779.10 = 78,931.35/x
  3. Step 3: Cross multiply
    142,593.55x = 196,779.10 × 78,931.35
  4. Step 4: Simplify right side
    142,593.55x = 15,532,039,227.53
  5. Step 5: Solve for x
    x = 15,532,039,227.53/142,593.55
  6. Step 6: Final answer
    x = 108,925.26

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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.