Home / 139,430.90-209,261.55-64,666.10

Finding the Fourth Proportional to 139,430.90, 209,261.55 and 64,666.10

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Solution

The fourth proportional to 139,430.90, 209,261.55 and 64,666.10 is: 97,052.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,430.90 : 209,261.55 = 64,666.10 : x
  2. Step 2: Convert to fraction form
    139,430.90/209,261.55 = 64,666.10/x
  3. Step 3: Cross multiply
    139,430.90x = 209,261.55 × 64,666.10
  4. Step 4: Simplify right side
    139,430.90x = 13,532,128,318.46
  5. Step 5: Solve for x
    x = 13,532,128,318.46/139,430.90
  6. Step 6: Final answer
    x = 97,052.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.