Home / 158,328.81-218,492.15-85,731.35

Finding the Fourth Proportional to 158,328.81, 218,492.15 and 85,731.35

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Solution

The fourth proportional to 158,328.81, 218,492.15 and 85,731.35 is: 118,308.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,328.81 : 218,492.15 = 85,731.35 : x
  2. Step 2: Convert to fraction form
    158,328.81/218,492.15 = 85,731.35/x
  3. Step 3: Cross multiply
    158,328.81x = 218,492.15 × 85,731.35
  4. Step 4: Simplify right side
    158,328.81x = 18,731,625,462.79
  5. Step 5: Solve for x
    x = 18,731,625,462.79/158,328.81
  6. Step 6: Final answer
    x = 118,308.38

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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.