Home / 121,317.17-167,421.21-70,330.10

Finding the Fourth Proportional to 121,317.17, 167,421.21 and 70,330.10

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Solution

The fourth proportional to 121,317.17, 167,421.21 and 70,330.10 is: 97,057.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,317.17 : 167,421.21 = 70,330.10 : x
  2. Step 2: Convert to fraction form
    121,317.17/167,421.21 = 70,330.10/x
  3. Step 3: Cross multiply
    121,317.17x = 167,421.21 × 70,330.10
  4. Step 4: Simplify right side
    121,317.17x = 11,774,750,441.42
  5. Step 5: Solve for x
    x = 11,774,750,441.42/121,317.17
  6. Step 6: Final answer
    x = 97,057.58

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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.